picogram

[ pee-kuh-gram, pahy- ]
/ ˈpi kəˌgræm, ˈpaɪ- /

noun

one trillionth of a gram. Abbreviation: pg

QUIZZES

THIS PSAT VOCABULARY QUIZ IS PERFECT PRACTICE FOR THE REAL TEST

In our third teacher-created PSAT practice test there are new and unique vocabulary terms you may have never heard of! Can you guess what they mean?
Question 1 of 10
seclusion

Origin of picogram

First recorded in 1950–55; pico- + -gram2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Medical definitions for picogram

picogram
[ pēkə-grăm′, pī- ]

n.

One-trillionth (10-12) of a gram.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.