oncoregulator
Any material, typically a protein, that regulates the onset and development of a cancer

oncoregulators
plural of oncoregulator

oncosome
A membrane-derived microvesicle that is secreted by cancer cells and transfers oncogenic messages and protein complexes across cell borders

oncosomes
plural of oncosome

oncula
A red stone-based dye used as hair product by the Mwila tribe.

oneirophrenia
A hallucinatory, dream-like state caused by sleep deprivation, drugs, etc.

oneirophrenias
plural of oneirophrenia

onoceradiene
Any of a group of triterpene hydrocarbons, such as (4aS,8aS,4a'S,8a'S)-8,8'-(1,2-ethanediyl)bis(4,4,7,8a-tetramethyl-1,2,3,4,4a,5,6,8a-octahydronaphthalene), found in the fern Lemmaphyllum microphyllum

onoceradienes
plural of onoceradiene

onomasticide
The deliberate changing of foreign surnames into local equivalents

onomasticides
plural of onomasticide

ool
A swimming pool into which urinating is not allowed.

oomycide
Any substance that kills oomycetes.

oomycides
plural of oomycide

ooxanthine
Alternative form of ooxanthin.

ooxanthines
plural of ooxanthine

opacifier
a chemical agent added to a material, such as rocket propellant, to make it opaque
an extraneous agent or vehicle which, intentionally otherwise, makes something opaque

opacifiers
plural of opacifier

opetide
The open time; that part of the year outside Lent when there is no required fast.
Open time; the time when something is open, accessible.

ophidine
The dipeptide β‐alanyl‐L‐3‐methylhistidine

ophidism
Poisoning by snake venom.

ophiobolin
Any of a class of phytotoxic metabolites produced by certain fungi of the genus Helminthosporium

ophiobolins
plural of ophiobolin

ophioleucin
Any brittle star of the subfamily Ophioleucinae

ophioleucins
plural of ophioleucin

ophistotic
Alternative form of opisthotic.

ophistotics
plural of ophistotic

ophthalmol
Abbreviation of ophthalmology.

ophthalmosaurine
Any ophthalmosaurid of the subfamily Ophthalmosaurinae

ophthalmosaurines
plural of ophthalmosaurine

opianine
An alkaloid found in small quantities in opium, identical with narcotine.

opianyl
meconin

opioidophobia
The aversion to prescribing, administering or taking opioid medications for fear of addiction.

opiomelanocortin
A polypeptide, found in the pituitary gland, associated with endorphins and other hormones

opiomelanocortins
plural of opiomelanocortin

opisthocranion
The posteriormost point in the midsagittal plane of the occiput

opisthotic
The inferior and posterior of the three elements forming the periotic bone.

opisthotics
plural of opisthotic

opistoporin
Any of a group of peptides that form pores in cell membranes

opistoporins
plural of opistoporin

oporice
A medicine prepared from quinces, pomegranates, etc.

opsin
Any of a group of light-sensitive proteins in the retina.

opsins
plural of opsin

opsonin
Any chemical produced by the body, including antibodies and complement proteins, that causes a pathogen to be more susceptible to phagocytosis.

opsonins
plural of opsonin

optineurin
A protein that is associated with glaucoma

optochemokine
A chemokine that is activated by light

optochin
ethylhydrocupreine

optoinjectant
A material that is optoinjected

optoinjectants
plural of optoinjectant

optoinjection
optical injection, photoinjection (of nucleic acids)

orangeats
plural of orangeat

orbatide
A group of bioactive cyclic ribosomally synthesized and posttranslationally modified peptides of natural plant sources

orbatides
plural of orbatide

orbitrap
A mass analyzer consisting of an outer barrel-like electrode and a coaxial inner spindle-like electrode that traps ions in an orbital motion around the spindle. The image current from the trapped ions is detected and converted to a mass spectrum using the Fourier transform of the frequency signal.

orbitraps
plural of orbitrap

orcokinin
Any of a family of crustacean peptides that elicit potent myotropic effects in gut tissues

orcokinins
plural of orcokinin

orefield
land from which ore is mined

orefields
plural of orefield

oreide
Alternative form of oroide.

oreides
plural of oreide

orellanin
orellanine

orellanine
A lethal mycotoxin found in Orellani mushrooms; 3,3′,4,4′-tetrahydroxy-2,2′-bipyridine-N,N′-dioxide.

oreochromine
Any cichlid of the tribe Oreochromini

oreochromines
plural of oreochromine

oreshoot
An elongated body of ore that follows a vein.

oreshoots
plural of oreshoot

orexigen
Any orexigenic substance

orexigens
plural of orexigen

orexin
Either of two neuropeptide hormones found in vertebrates; the hypocretins.

orexins
plural of orexin

orfamide
Any of a class of cyclic lipopeptide lactones present in some Pseudomonas bacteria

orfamides
plural of orfamide

orforglipron
A small-molecule GLP-1 receptor agonist developed as a weight loss drug.

organoalkoxysilane
Any organic derivative of alkoxysilane.

organocation
Any cation formed from an organic compound

organocations
plural of organocation

organoceramic
Any material made out of organic and ceramic materials.

organochalcogen
A chemical compound or functional group containing carbon (“organic”) atoms and group 16/chalcogen atoms, but not necessarily exclusively, which are also organic compounds. (ie. carbon dioxide, amongst others, is inorganic, thus not an organochalogen)
The class of such compounds.

organochalcogens
plural of organochalcogen

organochloride
organochlorine

organochlorides
plural of organochloride

organochloroaluminate
Any organic derivative of chloroaluminate.

organoclay
An organically modified phyllosilicate, derived from a naturally occurring clay mineral.

organoclays
plural of organoclay

organocobalamin
Any organometallic derivative of cobalamin.

organocobaloxime
Any organometallic derivative of cobaloxime.

organocuprate
Any organic cuprate

organocuprates
plural of organocuprate

organocyclotriphosphazene
Any organic derivative of cyclotriphosphazene, used as an antimicrobial or an anticancer agent.

organocyclotriphosphazenes
plural of organocyclotriphosphazene

organofluoride
organofluorine

organofluorides
plural of organofluoride

organogel
A liquid organic phase containing a three-dimensional cross-linked network

organogelator
Any material which, when added to an organic solvent, creates an organogel

organogelators
plural of organogelator

organogels
plural of organogel

organogen
Any of the four elements — carbon, hydrogen, oxygen, and nitrogen — that are especially characteristic of organic compounds.
Any of certain other elements sometimes found in organic compounds, such as sulphur and phosphorus.

organogens
plural of organogen

organohalide
An organic halide, an organic compound containing one or more substituted halogen atoms.

organohalides
plural of organohalide

organohybrid
A material composed of two (typically related) organic compounds

organohybrids
plural of organohybrid

organoiodide
Any organic iodide

organoiodides
plural of organoiodide

organokine
Any cytokine that regulates the cells of a particular organ

organokines
plural of organokine

organolithotroph
A chemoautotroph that derives its energy from both organic and inorganic sources

organolithotrophs
plural of organolithotroph

organomineralization
The mineralization of organic (biological) material

organoperoxide
Any organic peroxide

organoperoxides
plural of organoperoxide

organoperoxy
Any organic peroxy radical (R-O-O-)

organoperoxys
plural of organoperoxy

organophosphine
Any organic phosphine

organophosphines
plural of organophosphine

organophosphoryl
Any organic phosphoryl radical

organophosphoryls
plural of organophosphoryl

organopolymerization
The polymerization of organic compounds, especially when catalysed by another organic compound.

organopolymerizations
plural of organopolymerization

organoprotection
protection from the action of organic compounds, especially from organic free radicals

organoselenide
Any organic selenide (R-Se-H or R-Se-R)