/ Dictionary / Index P particular average: Meaning and Definition of Find definitions for: partic'ular av'erage Pronunciation: [key] — Marine Insurance. Marine Insurance. a loss at sea, as through accident or negligence, that is borne solely by the owner of the lost property. Abbr.: P.A. Also calledCf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. particular affirmative particularism Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language