(Internet) Software that can be tried for a limited time, after which it expires or has limited functionality.

(British spelling) (Canadian spelling, common) simple past tense and past participle of trial

(organic chemistry, in combination) Three alkyl groups in a compound

(organic chemistry, in combination) Three allyl groups in a compound

(British spelling) (Canadian spelling, common) present participle of trial

The process of running a trial; an experiment or pilot. / The running of trial races, especially for horses or greyhounds.

Threeness. / (mathematics) A relationship between three vector spaces.

plural of triality

(organic chemistry) Any of a class of aliphatic phosphines of general formula R₃P

plural of trialkylphosphine