(formal, euphemistic) Addictive; likely to cause dependence or recurrence of use.

(physics) The ratio of the RMS value to the absolute mean of a sinusoidal wave (especially to that of an alternating current)

plural of form factor

plural of combining form

A simple tailor's dummy with no head or limbs

plural of form taxon

A form one fills in when applying for a job, placement, course, service etc.

(taxonomy) A collection of organisms that is given formal recognition at some rank with a taxonomic name, but which is known to be a grouping based on similar morphological characteristics, rather than more extensive biological similarity.

(taxonomy) A collection of organisms that is given formal recognition at the rank of class with a taxonomic name, but which is known to be an artificial group rather than a natural one.

plural of form class