tri·cy·cle noun : a 3-wheeled vehicle usu. propelled by pedals
tri·dent noun [ORIGIN: L trident-, tridens, fr. tri- three + dent-, dens tooth]
: a 3-pronged spear
tried adjective 1 : found trustworthy through testing
2 : subjected to trials
Synonyms
dependable, good, reliable, responsible, safe, solid, steady, sure, true, trustworthy—more at DEPENDABLE
tri·en·ni·al adjective 1 : occurring or being done every three years
2 : lasting for three years
— triennial noun
1trifle noun 1 : something of little value or importance
2 : a dessert of cake soaked with liqueur and served with toppings (as fruit or cream)
Synonyms
child's play, frippery, nothing, triviality; also naught, nothingness, smoke, zero; molehill, peanuts, pittance, song, straw; nonsense, trivia
2trifle verb tri·fled; tri·fling 1 : to talk in a jesting or mocking manner
2 : to treat someone or something as unimportant
3 : DALLY, FLIRT
4 : to handle idly : TOY
5 : to spend or waste (as time or money) in trifling or on trifles
— tri·fler noun
tri·fling adjective 1 : FRIVOLOUS
2 : lacking in significance or solid worth : TRIVIAL
Synonyms
frivolous, inconsequential, inconsiderable, insignificant, little, minor, minute, negligible, slight, small, trivial, unimportant—more at UNIMPORTANT
tri·fo·cals noun plural : eyeglasses with lenses having one part for close focus, one for intermediate focus, and one for distant focus
tri·fo·li·ate adjective : having three leaves or leaflets
1trig adjective : stylishly trim : SMART
2trig noun : TRIGONOMETRY
1trigger noun [ORIGIN: alter. of earlier tricker, fr. D trekker, fr. MD trecker one that pulls, fr. trecken to pull]
: a movable lever that activates a device when it is squeezed; especially : the part of a firearm lock moved by the finger to fire a gun
— trigger adjective
— trig·gered adjective
2trigger verb 1 : to fire by pulling a trigger
2 : to initiate, actuate, or set off as if by a trigger
Synonyms
activate, actuate, crank, drive, move, propel, run, set off, spark, start, touch off, turn on—more at ACTIVATE
tri·glyc·er·ide noun : any of a group of lipids that are formed from glycerol and fatty acids and are widespread in animal tissue
trig·o·nom·e·try noun : the branch of mathematics dealing with the properties of triangles and esp. with finding unknown angles or sides given the size or length of some angles or sides
— trig·o·no·met·ric also trig·o·no·met·ri·cal adjective
trike noun : TRICYCLE
1trill noun 1 : the alternation of two musical tones a scale degree apart
2 : WARBLE
3 : the rapid vibration of one speech organ against another (as of the tip of the tongue against the teeth)
2trill verb : to utter as or with a trill
tril·lion noun 1 : a thousand billions
2 British : a million billions
— trillion adjective
— tril·lionth adjective or noun
tril·li·um noun : any of a genus of spring-blooming herbs that are related to the lilies and have an erect stem bearing a whorl of three leaves and a solitary flower
tril·o·gy noun, plural -gies : a series of three dramas or literary or musical