myriad myriad /ˈmɪriːəd/

adjective

1. () Too numerous to be counted  ( infinite , innumerous , numberless , innumerable , multitudinous , uncounted , unnumberable , unnumbered , unnumerable , countless , myriad )
   too numerous to be counted
    Countless hours
   countless hours
    An infinite number of reasons
   an infinite number of reasons
    Innumerable difficulties
   innumerable difficulties
    The multitudinous seas
   the multitudinous seas
    Myriad stars
   myriad stars
   

noun

1. () A large indefinite number  ( myriad )
   a large indefinite number
    He faced a myriad of details
   he faced a myriad of details
   
2. The cardinal number that is the product of ten and one thousand  ( 10000 , myriad , ten thousand )
   the cardinal number that is the product of ten and one thousand
    There are ten thousand meters in ten kilometers
   There are ten thousand meters in ten kilometers