Document:

Exhibit 4.1

 

	NUMBER	 	UNITS
	U-	 	 
	SEE REVERSE FOR	TRANSLATIONAL DEVELOPMENT ACQUISITION CORP.	 

CERTAIN

DEFINITIONS

 

CUSIP G9008W121

 

UNITS CONSISTING OF ONE CLASS A ORDINARY
SHARE AND ONE-HALF WARRANT,

EACH WARRANT ENTITLING THE HOLDER TO PURCHASE
ONE CLASS A ORDINARY SHARE

 

THIS CERTIFIES THAT
___________________________ is the owner of
______________________________________________________ Units.

 

Each Unit (“Unit”)
consists of one (1) Class A ordinary share, par value $0.0001 per share (“Class A ordinary shares”),
of Translational Development Acquisition Corp., a Cayman Islands exempted company (the “Company”), and one-half
of one redeemable warrant (“Warrant”). Each Warrant entitles the holder to purchase one (1) Class A
ordinary share for $11.50 per share, subject to adjustment. Each Warrant will become exercisable thirty (30) days after the Company’s
completion of a merger, amalgamation, share exchange, asset acquisition, share purchase, reorganization or other similar business combination
with one or more businesses (each a “Business Combination”), and will expire unless exercised before 5:00 p.m.,
New York City Time, on the date that is five (5) years after the date on which the Company completes its initial Business Combination,
or earlier upon redemption or liquidation. The Class A ordinary shares and Warrants comprising the Units represented by this certificate
will begin separate trading on [●] unless ThinkEquity, LLC elects to allow earlier separate trading, subject to the Company’s
filing of a Current Report on Form 8-K with the Securities and Exchange Commission containing an audited balance sheet reflecting
the Company’s receipt of the gross proceeds of its initial public offering and issuing a press release announcing when separate
trading will begin. The terms of the Warrants are governed by a Warrant Agreement, dated as of [●], 2022, between the Company
and Continental Stock Transfer & Trust Company, as Warrant Agent, and are subject to the terms and provisions contained therein,
all of which terms and provisions the holder of this certificate consents to by acceptance hereof. Copies of the Warrant Agreement are
on file at the office of the Warrant Agent at One State Street, 30th Floor, New York, New York 10004, and are available to
any Warrant holder on written request and without cost.

 

This certificate is not valid unless countersigned
by the Transfer Agent and Registrar of the Company.

 

This certificate
shall be governed by and construed in accordance with the internal laws of the State of New York.

 

Witness the facsimile
signatures of its duly authorized officers.

 

	By:	 	 
	 	Chief Executive Officer	 

 

     

     

    

 

TRANSLATIONAL DEVELOPMENT ACQUISITION CORP.

 

The Company will
furnish without charge to each unitholder who so requests, a statement of the powers, designations, preferences and relative, participating,
optional or other special rights of each class of shares or series thereof of the Company and the qualifications, limitations, or restrictions
of such preferences and/or rights.

 

The following
abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

 

	TEN COM 	
    –
	as tenants in common

     
	UNIF GIFT MIN ACT – 	Custodian
	TEN ENT 	–	as tenants by the entireties	(Cust)	(Minor)
	 	 	 	 	 
	JT TEN – 	         as joint tenants with right of survivorship and not as tenants in common	under Uniform Gifts to Minors	 
	 	 	 	 
	 	 	Act _________________
	 	 	(State)

 

Additional abbreviations may also
be used though not in the above list.

 

For
value received, hereby sell, assign and transfer unto

 

	
    

    PLEASE INSERT SOCIAL SECURITY OR OTHER
	 	 
	IDENTIFYING NUMBER OF ASSIGNEE	 	 
	 	 	 

(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING
ZIP CODE, OF ASSIGNEE)

 

Units

 

represented by the within Certificate, and do hereby irrevocably
constitute and appoint

 

Attorney to transfer
the said Units on the register of members of the within named Company with full power of substitution in the premises.

 

Dated:

 

	 	Notice: 	The signature to this assignment must correspond with the name as written upon the face of the certificate in every particular, without alteration or enlargement or any change whatever.
	 	 
	Signature(s) Guaranteed:	 
	 	 	 	 

THE SIGNATURE(S) MUST
BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP
IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15 (OR ANY SUCCESSOR RULE) UNDER THE SECURITIES EXCHANGE
ACT OF 1934, AS AMENDED).

 

In each case, as more fully described in the Company’s
final prospectus dated [●], 2022, the holder(s) of this certificate shall be entitled to receive a pro rata portion
of certain funds held in the trust account established in connection with its initial public offering only in the event that (i) the
Company redeems the Class A ordinary shares sold in its initial public offering and liquidates because it does not consummate an
initial business combination by a date calculated by reference to the Company’s amended and restated memorandum and articles of
association, (ii) the Company redeems the Class A ordinary shares sold in its initial public offering in connection with a shareholder
vote to amend the Company’s amended and restated memorandum and articles of association (a) to modify the substance or timing
of the Company’s obligation to redeem 100% of the Class A ordinary shares if it does not consummate an initial business combination
by a date calculated by reference to the Company’s amended and restated memorandum and articles of association or (b) with
respect to any other provision relating to shareholders’ rights or pre-initial business combination activity, or (iii) if the
holder(s) seek(s) to redeem for cash his, her or its respective Class A ordinary shares in connection with a tender offer
(or proxy solicitation, solely in the event the Company seeks shareholder approval of the proposed initial business combination) setting
forth the details of a proposed initial business combination. In no other circumstances shall the holder(s) have any right or interest
of any kind in or to the trust account.Exhibit 4.2

 

	NUMBER	SHARES

 

TRANSLATIONAL DEVELOPMENT ACQUISITION CORP.

 

INCORPORATED UNDER THE LAWS OF THE CAYMAN ISLANDS

 

CLASS A ORDINARY SHARES

 

SEE REVERSE
FOR

CERTAIN DEFINITIONS

 

This Certifies that is the owner of CUSIP G9008W105

 

FULLY PAID AND NON-ASSESSABLE CLASS A ORDINARY SHARES OF THE
PAR VALUE OF US$0.0001 EACH OF

 

TRANSLATIONAL DEVELOPMENT ACQUISITION CORP.

 

(THE “COMPANY”)

 

transferable on the register of members of the
Company in person or by duly authorized attorney upon surrender of this certificate properly endorsed.

 

The Company will be forced to redeem all of
its Class A ordinary shares if it is unable to complete a business combination by a date calculated by reference to the Company’s
amended and restated memorandum and articles of association, all as more fully described in the Company’s final prospectus dated
[●], 2022.

 

This certificate is not valid unless countersigned
by the Transfer Agent and registered by the Registrar.

 

Witness the facsimile seal of the Company and
the facsimile signatures of its duly authorized officers.

 

Dated:

 

	 	 
	CHIEF EXECUTIVE OFFICER	 

 

The following
abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

 

	TEN – COM	as tenants in common	UNIF GIFT MIN ACT – Custodian
	 	 	 
	TEN – ENT	as tenants by the entireties	 	(Cust)	(Minor)
	 	 	 	 	 
	JT TEN –	as joint tenants with right of survivorship and not as tenants in common	 	under Uniform Gifts to Minors
	 	 	 	 	 
	 	 	 	Act_________________
	 	 	 	(State)

 

Additional abbreviations may also be used though
not in the above list.

 

     

     

    

 

TRANSLATIONAL DEVELOPMENT ACQUISITION CORP.

 

The Company will
furnish without charge to each shareholder who so requests the powers, designations, preferences and relative, participating, optional
or other special rights of each class of shares thereof of the Company and the qualifications, limitations, or restrictions of such preferences
and/or rights. This certificate and the shares represented thereby are issued and shall be held subject to all the provisions of the amended
and restated memorandum and articles of association and all amendments thereto and resolutions of the Company’s Board of Directors
providing for the issue of securities (copies of which may be obtained from the secretary of the Company), to all of which the holder
of this certificate by acceptance hereof assents.

 

For value received, hereby sell,
assign and transfer unto

 

(PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING
NUMBER OF ASSIGNEE(S))

	 

(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS(ES), INCLUDING
ZIP CODE, OF ASSIGNEE(S))

 

shares

 

represented by the within Certificate, and does hereby irrevocably
constitute and appoint

 

	 	 

 

Attorney to
transfer the said shares on the register of members of the within named Company with full power of substitution in the premises.

 

	Dated:	 	 
	 	 	 
	 	Notice: 	The signature to this assignment must correspond with the name as written upon the face of the certificate in every particular without alteration or enlargement or any change whatever.

 

Signature(s) Guaranteed:

 

THE SIGNATURE(S) MUST
BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP
IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15) (OR ANY SUCCESSOR RULE) UNDER THE SECURITIES EXCHANGE
ACT OF 1934, AS AMENDED).

 

In each case,
as more fully described in the Company’s final prospectus dated [●], 2022, the holder(s) of this certificate shall
be entitled to receive a pro rata portion of certain funds held in the trust account established in connection with its initial public
offering only in the event that (i) the Company redeems the Class A ordinary shares sold in its initial public offering and
liquidates because it does not consummate an initial business combination by a date calculated by reference to the Company’s amended
and restated memorandum and articles of association, (ii) the Company redeems the Class A ordinary shares sold in its initial
public offering in connection with a shareholder vote to amend the Company’s amended and restated memorandum and articles of association
(a) to modify the substance or timing of the Company’s obligation to redeem 100% of the Class A ordinary shares if it
does not consummate an initial business combination by a date calculated by reference to the Company’s amended and restated memorandum
and articles of association or (b) with respect to any other provision relating to shareholders’ rights or pre-initial business
combination activity, or (iii) if the holder(s) seek(s) to redeem for cash his, her or its respective Class A ordinary
shares in connection with a tender offer (or proxy solicitation, solely in the event the Company seeks shareholder approval of the proposed
initial business combination) setting forth the details of a proposed initial business combination. In no other circumstances shall the
holder(s) have any right or interest of any kind in or to the trust account.

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