(topology, idiomatic) A space obtained from another by identification of points that are equivalent to one another in some equivalence relation.

(biochemistry) The active form of folic acid

A naturally-occurring substance capable of stimulating cellular growth, proliferation, and cellular differentiation.

(informal) Disgusting part of the nature of something; facet or tendencies (of a thing, idea, etc) to produce a reaction of repugnance or distaste.

A factor that is multiplied with the result of an equation to correct for a known amount of systematic error.

The idea that many anti-hunting arguments are based on the cuteness of the animal being hunted.

A conversion factor, constant for a given kata thermometer, used to convert the measured time for a standardised drop in temperature into the environmental cooling rate.

(informal) Synonym of yuck factor

(molecular biology, genetics) A protein that binds to specific DNA sequences, thereby controlling the flow (or transcription) of genetic information from DNA to mRNA.

The measurement of a specific substance's ability to absorb radiant energy; absorptivity.