Try Our Apps


Supposedly vs. Supposably

Mohorovičić discontinuity

or Moho

[moh-haw-roh-vuh-chich, -hoh-] /ˌmoʊ hɔˈroʊ və tʃɪtʃ, -hoʊ-/
noun, Geology
the discontinuity between the crust and the mantle of the earth, occurring at depths that average about 22 miles (35 km) beneath the continents and about 6 miles (10 km) beneath the ocean floor.
Origin of Mohorovičić discontinuity
1935-40; named after Andrija Mohorovičić (1857-1936), Croatian geophysicist, who discovered it Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for moho
Historical Examples
  • Dr. Sclater justly proposed a new generic term for the "Entomyza" or "moho" angustipluma of former authors.

    Extinct Birds Walter Rothschild
  • moho saw her still swimming and sent another wind servant, Makani-kona, the south wind, to drive her again out in the ocean.

    Legends of Gods and Ghosts (Hawaiian Mythology) W. D. (William Drake) Westervelt
  • The very old natives say they remember the bird and call it "moho."

    Extinct Birds Walter Rothschild
British Dictionary definitions for moho



Mohorovičić discontinuity

the boundary between the earth's crust and mantle, across which there is a sudden change in the velocity of seismic waves Often shortened to Moho
Word Origin
C20: named after Andrija Mohorovičić (1857–1936), Croatian geologist
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
Cite This Source
moho in Science
The Mohorovičić discontinuity.
Mohorovičić discontinuity
The boundary between the Earth's crust and mantle, located at an average depth of 8 km (5 mi) under the oceans and 32 km (20 mi) under the continents. The velocity of seismic primary waves across this boundary changes abruptly from 6.7 to 7.2 km (4.1 to 4.5 mi) per second in the lower crust to 7.6 to 8.6 km (4.7 to 5.3 mi) per second in the upper mantle. The boundary is estimated to be between 0.2 and 3 km (0.1 and 1.9 mi) thick and is believed to coincide with a change in rock type from basalts (above) to peridotites and dunites (below). It is named after its discoverer, Croatian seismologist Andrija Mohorovičić (1857-1936).
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Related Abbreviations for moho


Mohorovicic discontinuity
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for Mohorovičić discontinuity

Few English speakers likely know this word

Word Value for moho

Scrabble Words With Friends

Nearby words for moho