[pach-uh-luh s]


open; gaping; expanded.
  1. spreading, as a tree or its boughs.
  2. spreading slightly, as a calyx.
  3. bearing the flowers loose or dispersed, as a peduncle.

Origin of patulous

First recorded in 1610–20, patulous is from the Latin word patulus standing wide-open. See patent, -ulous
Related formspat·u·lous·ly, adverbpat·u·lous·ness, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for patulous

Historical Examples of patulous

British Dictionary definitions for patulous



botany spreading widely or expandedpatulous branches
rare gaping
Derived Formspatulously, adverbpatulousness, noun

Word Origin for patulous

C17: from Latin patulus open, from patēre to lie open
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

patulous in Medicine




Freely open or exposed; patent.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.