- The definition of myriad is an infinite number of others or numerous diverse elements.
An example of myriad is the number of creatures living in the ocean.
- Myriad is an infinitely large number of people or things.
An example of myriad is a huge grouping of trees in a forest.
A myriad of trees in a forest.
- Archaic ten thousand
- any indefinitely large number
- a great number of persons or things
Origin of myriad; from Classical Greek myrias (gen. myriados), the number ten thousand ; from myrios, countless
- of an indefinitely large number; countless; innumerable
- of a highly varied nature
- Constituting a very large, indefinite number; innumerable: the myriad fish in the ocean.
- Composed of numerous diverse elements or facets: the myriad life of the metropolis.
- A large, indefinite number: a myriad of microorganisms in the pond; myriads of stars in the galaxy.
- Archaic Ten thousand.
Origin of myriadGreek mūrias, mūriad-, ten thousand, from mūrios, countless. Usage Note: Throughout most of its history in English myriad was used as a noun, as in a myriad of reasons. In the 1800s, it began to be used in poetry as an adjective, as in myriad dreams. Both usages in English are acceptable, as in Samuel Taylor Coleridge's “Myriad myriads of lives.” This poetic, adjectival use became so well entrenched generally that many people came to consider it as the only correct use. In fact, however, both uses are acceptable today.
Used as an adjective (see below), 'myriad' requires neither an article before it nor a preposition after. Because of this, some consider the usage described in sense 2 above, where 'myriad' acts as part of a nominal (noun) group (that is, "a myriad of animals"), to be tautological.