/ Dictionary / Index P Pacific high: Meaning and Definition of Find definitions for: Pacif'ic high' Pronunciation: [key] a semipermanent, atmospheric, high-pressure system of the Pacific Ocean, centered, in the mean, about 1000 mi. (1600 km) northeast of Hawaii: one of the subtropical highs. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Pacific Grove Pacific Islands, Trust Territory of the Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language