preassociative
Prior to association into an aggregation

preasthmatic
Before the onset of asthma.

preasymptotic
Prior to becoming asymptotic

preataxic
Before the onset of ataxia.

preatheroma
Prior to the development of an atheroma

preatherosclerotic
Prior to the onset of atherosclerosis

preatmospheric
Describing a meteoroid as it approaches the atmosphere

preatomic
Prior to the discovery or use of the atomic bomb.

preatrial
Prior to an atrial event (typically a contraction)

preattached
Already attached

preattachment
Prior to an attachment, especially (psychology) before an infant has formed a particular bond with its caregiver.

preattack
Before an attack.

preattentional
Of or pertaining to preattention.

preattentive
Of or pertaining to preattention.

preauction
Before an auction.

preauditory
In front of the auditory region of the brain

preaugmentation
Before augmentation.

preauricular
In front of the external ear.

preauthorisation
Alternative form of preauthorization.

preauthorisations
plural of preauthorisation

preauthorization
Prior to authorization.

preauthorizations
plural of preauthorization

preautistic
Before the readily apparent onset of autism.

preautonomic
Prior to having conscious control

preautonomous
Prior to autonomy.

preautonomy
Prior to autonomy.

preautophagic
Present prior to autophagy

preautophagosomal
Prior to the formation of an autophagosome
Relating to preautophagosomes

preautopsy
Prior to autopsy.

preaward
Prior to the giving / receiving of an award

preaxial
Located in front of an axis

preaxostylar
Relating to preaxostylids

prebaby
Before the birth of a baby.

prebagged
Packaged in a bag in advance.

preball
Before a ball (social event with dancing).

preballot
Before a ballot.

preballoting
Synonym of preballot.

preban
Before the enacting of a ban.

prebankruptcy
Preceding a bankruptcy.

prebaptism
Before baptism.

prebaptismal
Before baptism.

prebaptized
Before having been baptized.

prebargain
Prior to a bargain being struck.

prebargaining
Prior to bargaining.

prebariatric
Prior to a bariatric procedure

prebasal
anterior to the base

prebaseline
Prior to the introduction, or to the crossing of a baseline

prebasic
Prior to the development of basic plumage

prebath
Before taking a bath.

prebattle
Before a battle.

prebedtime
Before bedtime.

prebellum
Synonym of antebellum.

prebeloved
beloved in advance

prebendal
Of or pertaining to a prebend; prebendary.
Having an associated prebend.
Of or pertaining to an honorary religious title granted by the state.
Of or relating to official positions that are profitable for the incumbent, to the allocation of such positions, or to a system in which such allocation is prevalent.
Relating to political patronage.

prebendaries
plural of prebendary

prebendary
An honorary canon of a cathedral or collegiate church.

prebent
bent in advance

prebetrothal
Before betrothal.

prebiblical
Before the publication of the Bible.

prebid
Before a takeover bid.

prebifurcation
Prior to bifurcation

prebilabial
Occurring immediately before a bilabial consonant, i.e. before /m/, /p/, /b/, /ɸ/, /β/, /β̞/, /ʙ/, or /ʘ/.

prebilaterian
prior to the evolution of the bilaterians

prebinge
Before a binge.

prebiologic
Synonym of prebiological.

prebiological
Prior to the time when life arose.

prebiopsy
Before a biopsy.

prebiotechnology
Before the era of biotechnology.

prebiotinylated
biotinylated before some other operation

prebiotinylation
Prior to biotinylation

prebirth
The period, usually six months, preceding a child's birth.

prebirths
plural of prebirth

prebisected
bisected in advance

preblastoderm
Alternative form of preblastodermic.

preblastodermal
That develops to form blastoderm

preblastodermic
Prior to the development of a blastoderm

prebleach
Before a bleaching operation.

prebleached
bleached in advance

preblended
blended in advance of another process

preblockade
Before a blockade.

preblockage
Prior to blockage

preblog
Before the advent of blogs.

preblooming
Prior to blooming.

preblown
past participle of preblow

preblues
From the period before blues music.

preblurred
Blurred in advance.

preboiled
boiled in advance

prebonding
That occurs prior to bonding

preboned
Having had the bones removed in advance.

prebookable
Able to be prebooked.

prebooked
booked in advance

preboom
Before a boom

preboost
Prior to a boost.

preboot
Before booting.

preborn
Not yet born.

preborrowing
Prior to borrowing.

prebottleneck
Prior to a bottleneck, typically a population bottleneck.

prebound
Of a book: rebound with a library quality hardcover binding. In almost all commercial cases, the book in question began as a paperback.

prebrachial
anterior to the arm

prebranch
Describing the part of a root from which a lateral root will form

prebranchial
anterior of the gills

prebreach
Prior to a breach, especially a breach of contract.

prebreaded
Breaded in advance, or at the time of manufacture.

prebreakfast
Before breakfast.

prebreeding
Prior to breeding.

prebridal
Before becoming a bride.

prebriefed
Given a briefing in advance.

prebroadband
Before the introduction of broadband Internet access.

prebroadcast
Before a broadcast.

prebroadcasting
Before the development or the use of broadcast media.

prebronchial
Situated in front of the bronchus

prebronchodilator
Prior to the use of a bronchodilator.

prebrowned
Browned in advance (as of packaged meat).

prebrunch
Before brunch.

prebubble
Before a financial bubble.

prebuccal
Situated in front of the mouth

prebuckling
Prior to the buckling of a structure.

prebudget
Prior to, or in preparation for, the release of a budget

prebudgetary
Synonym of prebudget.

prebuild
To build ahead of time.

prebuilt
Built in advance.

prebuilts
plural of prebuilt

prebulimic
Before the onset of bulimia.

prebullying
Before the onset of bullying.

preburial
Prior to burial

preburlesque
Before the introduction of burlesque performances.

preburn
Before a burn.

preburnished
burnished in advance

prebursal
Proximal to a bursa.

preburst
Before a burst.

prebuttered
Having been buttered in advance.

prebuyout
Before a buyout.

prebypass
Prior to a bypass

precaecal
In front (upstream) of the caecum

precaffeinated
Not having yet ingested caffeine; in particular, not having yet had one's first cup of coffee in the morning

precalcarine
In front of the calcarine sulcus

precalced
precalculated

precalculable
Able to be precalculated.

precalibrated
calibrated in advance

precalibration
Prior to calibration

precalibrations
plural of precalibration

precambered
Having a camber designed in such a way as to reduce deflection under load.

precampaign
Before a campaign.

precampaigns
plural of precampaign

precancer
Before the onset of cancer.

precancerous
Of or pertaining to growth that is likely to develop into cancer.

precancers
plural of precancer

precandidature
Before candidature.

precanine
In front of a canine tooth

precanines
plural of precanine

precanning
Before canning.

precanon
Predating the development of a religious canon.
Set before the main or accepted canonical chronology of a fictional universe.

precanonical
Prior to the development of a religious canon.
In raw form, before conversion to a canonical form.

precanyon
Before the formation of a canyon.

precapillary
preceding (on the arterial side of) a capillary

precapitalist
Pertaining to precapitalism, a time before capitalism.

precapitalistic
Prior to capitalism.

precapitalists
plural of precapitalist

precapsular
Before formation of a capsule

precapsulotomy
Prior to capsulotomy.

precaptivity
Prior to a period of captivity.

precapture
Before capture.

precarcinogenic
Prior to a carcinogenic stage
Relating to a precarcinogen

precarcinomatous
Before the development of a carcinoma.

precardiac
anterior to the heart

precardiomyogenic
Prior to cardiomyogenesis

precardioversion
Before cardioversion.

precare
Synonym of forecare.