triˈalist or triˈallist noun

1. A person taking part in a trial or test
2. A competitor or player under consideration for a place in a major team (sport)

trial balance noun (bookkeeping)

In the double-entry system, a listing of all the balances in a ledger to check that the total of credit balances is equal to the total of debit balances

trial balloon noun

A ballon d'essai

trial court noun

1. The first court where the facts of a case are decided
2. A court where cases are tried, as opposed to an appeal court (chiefly N American)

triˈal-day noun (Shakespeare)

Day of trial

triˈal-fire noun (Shakespeare)

A fire for trying or proving

trial marriage noun

For a couple intending matrimony, a period of living together with a view to testing their compatibility

trial run noun

1. A test drive in a motor vehicle to ascertain its efficiency
2. Any introductory test, rehearsal, etc

trial trip noun

An experimental trip of a new vessel, to test its sailing-powers, etc

triˈalware same as shareware (see under share¹).

by trial and error

By trying out several methods and discarding those which prove unsuccessful

on trial

1. Undergoing proceedings in a court of law
2. On probation, as an experiment
3. Subject to a prospective purchase proving satisfactory

stand trial

To undergo trial in a court of law

trial of strength

1. A contest to find out who is the stronger (or strongest)
2. A struggle between two irreconcilable parties, prolonged until one of them weakens

trial² /trīˈəl/

1. Threefold, trinal
2. Expressing or representing three things (grammar)

A grammatical form expressing or representing three things

triˈalism noun

1. The doctrine of the existence of body, soul and spirit in man
2. A scheme for turning the Dual Monarchy into a triple (Austria, Hungary, and a South Slav state; historical)

triˈalist noun

trīality /-alˈi-ti/ noun