organoselenides
plural of organoselenide

organosilane
Any organic derivative of a silane containing at least one carbon to silicon bond

organosilanes
plural of organosilane

organosilanol
Any organic silanol

organosilanols
plural of organosilanol

organosilica
Any of a range of hybrid materials combining silica with various organic compounds

organosilicas
plural of organosilica

organosiloxane
Any organic siloxane

organosiloxanes
plural of organosiloxane

organosilsesquioxane
Any organic derivative of silsesquioxane.

organosol
A histosol, a soil comprising chiefly organic material.

organosols
plural of organosol

organostibine
Any organic derivative of stibine having at lease one carbon to antimony bond

organostibines
plural of organostibine

organosulfide
Also referred to as thioethers, a class of organic compounds RSR', where R and R' represent an alkyl group or other organic substituent. If R' is hydrogen, it is instead referred to as a thiol, or mercaptan.

organosulfides
plural of organosulfide

organosulfurane
Any sulfurane having at least one organic group attached to the sulfur atom.

organosulfuranes
plural of organosulfurane

organotellurane
Any tellurium analog of an organosulfide R-TeH or R-Te-R'

organotelluranes
plural of organotellurane

organothiol
Any organic derivative of thiol.

organothiophosphate
Any organic thiophosphate, many of which are used as insecticides etc

organothiophosphates
plural of organothiophosphate

organotitanate
Any organic derivative of titanate.

organotolerance
Tolerance to exposure to organic compounds.

organotrichlorosilane
Any organic derivative of trichlorosilane.

organotriethoxysilane
Any organic derivative of triethoxysilane.

organotroph
An organism that obtains its energy from organic compounds.

organotrophs
plural of organotroph

organule
One of the essential cells or elements of an organ.

organules
plural of organule

orgeat
A sweet syrup made from sugar and almonds (or originally barley) and rose water or orange-flower water.

orgeats
plural of orgeat

orientanol
A pterocarpan isolated from the wood of Erythrina orientalis.

ormizet
An astringent preparation of clay saturated with formic acid.

ornibactin
A siderophore produced by the helicobacter Burkholderia cenocepacia

ornibactins
plural of ornibactin

ornipressin
A vasoconstrictor, haemostatic and renal agent.

ornithodorin
A polypeptide thrombin inhibitor present in the soft tick Ornithodoros moubata

ornithol
Abbreviation of ornithology.

orobanchol
A strigolactone that acts as a germination stimulant

orobol
An isoflavone, found in Aspergillus niger and Streptomyces neyagawaensis, that is a potent inhibitor of phosphoinositide 3-kinase.

oroide
An alloy of copper and zinc or tin that has a gold color, used in making inexpensive jewelry.

oroides
plural of oroide

oroidin
Any of a family of alkaloids derived from marine sponges

oroidins
plural of oroidin

orotidylate
orotidine 5'-phosphate

orotone
A photographic print on glass, decorated with gold leaf or coloured with a gold pigment.

orotones
plural of orotone

orrisroot
The root of the orris.

orrisroots
plural of orrisroot

orsedew
Dutch metal; bronze leaf used as imitation gold leaf.

orsedue
Alternative form of orsedew.

orseille
orchil (lichen or dye)

orseilles
plural of orseille

orthant
A n-dimensional generalization of the quadrant (in two-dimensional Cartesian space) and octant (in three-dimensional space).

orthants
plural of orthant

orthent
A kind of shallow or "skeletal" soil, found on recent erosional surfaces or very old landforms completely devoid of weatherable minerals.

orthents
plural of orthent

orthoacetate
Any orthoester, formally derived from acetic acid, of general formula CH₃C(OR)₃

orthoacetates
plural of orthoacetate

orthoarsenite
The simple oxyanion of arsenic AsO₃³⁻; any salt containing this anion

orthoarsenites
plural of orthoarsenite

orthobenzoate
Any orthoester, formally derived from benzoic acid, of general formula C₆H₅-C(OR)₃

orthobenzoates
plural of orthobenzoate

orthobenzoquinone
One of the two isomers of quinone, 1,2-benzoquinone.

orthocaine
Methyl m-amino-p-hydroxybenzoate, a fine white crystalline powder used as an anesthetic on open wounds.

orthocaines
plural of orthocaine

orthocarbonate
Any polyether, of general formula C(O-R)₄, formally derived from orthocarbonic acid

orthocarbonates
plural of orthocarbonate

orthochlorobenzalmalononitrile
The active ingredient in most tear gas, C₁₀H₅ClN₂, also called CS gas

orthochloronitrobenzene
Alternative form of ortho-chloronitrobenzene.

orthochromite
Any of a group of mixed oxides of chromium and another metal (typically a rare earth element) of general formula MCrO₃

orthochromites
plural of orthochromite

orthocomplement
An element of an ortholattice which is the result of applying an orthocomplementation function to a given element (of that ortholattice) (of which it is said to be the orthocomplement).

orthocomplementation
An involution on a complemented lattice which is order-reversing and maps each element to a complement.

orthocomplementations
plural of orthocomplementation

orthocomplements
plural of orthocomplement

orthocresol
Ortho isomer of cresol.

orthodiphenol
Any diphenol in which the two hydroxyls are in the ortho position

orthodiphenols
plural of orthodiphenol

orthodromics
orthodromic navigation

orthoexciton
An exciton whose spin is parallel to that of its hole

orthoexcitons
plural of orthoexciton

orthoform
A former anaesthetic.

orthoformate
Any orthoester, formally derived from formic acid, of general formula HC(OR)₃

orthoformates
plural of orthoformate

orthohydrogen
form of the hydrogen molecule (H₂) in which the two nuclei have parallel spin; about 75% of natural hydrogen

orthohydrogens
plural of orthohydrogen

orthokeratology
The creation of gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors.

orthonitrotoluene
An organic compound with the formula CH₃C₆H₄NO₂.

orthoperiodate
The oxyanion IO₆⁵⁻ or any salt containing this anion

orthoperiodates
plural of orthoperiodate

orthopervanadate
The oxyanion of vanadium VO₆³⁻ or any salt containing this anion

orthopervanadates
plural of orthopervanadate

orthophenylene
The ortho- form of the phenylene radical.

orthophenylphenol
A biocide used as a preservative, consisting chemically of two linked benzene rings and a phenolic hydroxyl group.

orthoprosthesis
An orthodontic prosthesis

orthopyroxenite
An ultramafic and ultrabasic rock normally composed of the mineral orthopyroxene

orthopyroxenites
plural of orthopyroxenite

orthosubstitution
Any substitution reaction that introduces an atom or group into the ortho- position

orthosubstitutions
plural of orthosubstitution

orthothioformate
Any orthoester, formally derived from (the unstable) thioformic acid, of general formula HC(SR)₃

orthothioformates
plural of orthothioformate

orthotolidine
An organic compound with chemical formula (C₆H₄(CH₃)NH₂)₂, used mainly in dye production.

orthovanadate
The oxyanion of vanadium VO₄³⁻ or any salt containing this ion

orthovanadates
plural of orthovanadate

ortol
A particular chemical used as a photographic developer.

orxata
Alternative form of horchata.

orxatas
plural of orxata

oryctology
The study of things dug out of the earth, including minerals and fossils.

oryzanol
An antioxidant found in rice bran oil.

oryzanols
plural of oryzanol

oryzein
Misspelling of oryzenin.

oryzenin
A glutelin that is the main protein in rice

oscheoplasty
plastic surgery of the scrotum

oscillaton
A spherically-symmetric solution to an Einstein–Klein–Gordon equation

oscillatons
plural of oscillaton

ose
An esker.

oses
The various sugars ending in -ose, such as sucrose, lactose, glucose, and fructose.
plural of osar

osmanthuside
Any of a group of phenolic glycosides present in Osmanthus fragrans.

osmanthusides
plural of osmanthuside