Dictionary.com

appressorium

[ ap-re-sawr-ee-uhm, -sohr- ]
/ ˌæp rɛˈsɔr i əm, -ˈsoʊr- /
Save This Word!
noun, plural ap·pres·so·ri·a [ap-re-sawr-ee-uh, -sohr-]. /ˌæp rɛˈsɔr i ə, -ˈsoʊr-/. Mycology.
a flattened and thickened tip of a hyphal branch, formed by some parasitic fungi, that facilitates penetration of the host plant.
QUIZ
CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?
There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?
Question 1 of 7
Which sentence is correct?
His boss, whom he admires, is waiting to meet with him about the big project.
His boss, who he admires, is waiting to meet with him about the big project.
TAKE THE QUIZ TO FIND OUT

Origin of appressorium

1895–1900; <New Latin, equivalent to Latin appress(us) (see appressed) + -ōrium (see -tory2)

Words nearby appressorium

apprehension, apprehensive, apprentice, apprenticeship, appressed, appressorium, apprise, apprised, apprize, appro, approach
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for appressorium

appressorium
/ (ˌæprɛˈsɔːrɪəm) /
noun plural -ria (-rɪə)
botany a flattened hypha of a parasitic fungus that penetrates the host tissues

Word Origin for appressorium

from New Latin, from Latin appressus; see appressed
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
FEEDBACK