trio

Whether it’s birds, opera singers, aces, or golfers, you can use the word trio to refer to anything made up of three.

You can probably tell by tri- that trio involves three of something. It’s often used to describe a musical arrangement featuring three vocal parts or three different instruments, or a musical group made up of three players, such as a jazz trio consisting of a piano player, a bass player, and a drummer. For those not musically inclined, the word can be used more broadly to refer to three of anything, such as a trio of friends.

Definitions of trio
1

n a set of three similar things considered as a unit

Synonyms:
triad, triple, triplet
Examples:
Trimurti
the triad of divinities of later Hinduism
Types:
trilogy
a set of three literary or dramatic works related in subject or theme
trigon, triplicity
(astrology) one of four groups of the zodiac where each group consists of three signs separated from each other by 120 degrees
Type of:
set
a group of things of the same kind that belong together and are so used

n three people considered as a unit

Synonyms:
threesome, triad, trinity
Types:
triumvirate
a group of three men responsible for public administration or civil authority
troika
a modern Russian triumvirate
Type of:
assemblage, gathering
a group of persons together in one place

n three performers or singers who perform together

Type of:
musical group, musical organisation, musical organization
an organization of musicians who perform together

n a musical composition for three performers

Type of:
composition, musical composition, opus, piece, piece of music
a musical work that has been created

n the cardinal number that is the sum of one and one and one

Synonyms:
3, III, deuce-ace, leash, tercet, ternary, ternion, terzetto, three, threesome, tierce, trey, triad, trine, trinity, triplet, troika
Type of:
digit, figure
one of the elements that collectively form a system of numeration

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