pico-

combining form

1

: one trillionth (10⁻¹²) part of

picogram

2

: very small

picornavirus

Word History

Etymology

International Scientific Vocabulary, probably from Spanish pico small amount, literally, peak, beak

Kids Definition

pico-

combining form

pi·​co-

ˈpē-kō,

-kə

: one trillionth part of

Etymology

probably from Spanish pico "small amount," literally, "peak, beak"