Created by humans; artificial. / Counterfeit, fabricated, fake.

(number theory) A factor of a given integer which is also a prime number.

(transitive) to reduce an integer to its set of prime factors.

Of, pertaining to, or caused by factions. / Given to or characterized by discordance or insubordination.

(Britain, Ireland, chiefly in the plural) A retail supplier of car parts and accessories.

production, process, making

(physics) a factor arising frequently in special relativity, to calculate the degree of time dilation, length contraction and relativistic mass of an object moving relative to an observer, defined as (1-v²/c²)^(-0.5), where v and c are relative velocity and the speed of light, respectively

The collective feeling of well-being (or otherwise) of an electorate, a high one supposedly favouring the incumbent party in an election.

An indication of how long a sunscreen remains effective when applied to the skin.

Retroactive. / (law) Formulated or enacted after some event, and then retroactively applied to it.