(chemistry) A form of neighbouring group participation in which the rate of a reaction is increased

(historical, US) a court order that authorized customs officers to conduct general searches of premises for contraband; a form of search warrant

(UK) A guide dog.

plural of assistance dog

(law, public policy) Payment made to disadvantaged persons by government in order to alleviate the burdens of poverty, unemployment, disability, old age, etc. / government subsidy

plural of anchimeric assistance

service animal

plural of assistance animal

(soccer, Britain): One of the two officials at an association football match, previously known as linesmen, who assist the referee.

An employee in a shop, a shopkeeper.