Breadcrumb Home > Dictionary > Index P point source: Meaning and Definition of Find definitions for: point' source" Pronunciation: [key] — Physics, Optics. Physics,Optics. a source of radiation sufficiently distant compared to its length and width that it can be considered as a point. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pointsman point spread TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: supertonic Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language