myria-

1. a combining form meaning “10,000,” used especially in the names of metric units equal to 10,000 of the unit denoted by the base word:

   myriagram; myriameter.

myria-

combining_form

1. indicating a very great number

   myriapod

Word History and Origins

Origin of myria-¹

Combining form representing Greek mȳriás ten thousand; myriad

Word History and Origins

Origin of myria-¹

from Greek murios countless