pico-

1. a combining form meaning “one trillionth” (10 −12 ):

   picogram.

pico-

prefix

1. denoting 10 ^–12 p

   picofarad

Word History and Origins

Origin of pico-¹

< Spanish pico peak, beak, bit. See pic ²

Word History and Origins

Origin of pico-¹

from Spanish pico small quantity, odd number, peak