morula

noun
mor·u·la | \ˈmȯr-(y)ə-lə, ˈmär-\
plural morulae\ˈmȯr-(y)ə-ˌlē, -ˌlī, ˈmär- \ also morulas

Definition of morula 

: a globular solid mass of blastomeres formed by cleavage of a zygote that typically precedes the blastula

Other Words from morula

morular \ˈmȯr-(y)ə-lər, ˈmär- \ adjective
morulation \ˌmȯr-(y)ə-ˈlā-shən, ˌmär- \ noun

First Known Use of morula

1875, in the meaning defined above

History and Etymology for morula

borrowed from New Latin (in a German context), from Latin mōrum "black mulberry, blackberry" + New Latin -ula (as in gastrula, planula) — more at mulberry

Note: The term was introduced by the German biologist Ernst Haeckel (1834-1919) in Die Kalkschwämme, Band 1 (Berlin, 1872), p. 112: "Der Organismus der Kalkschwämme bildet zunächst, nachdem er den monoplastiden Zustand der Eizelle durch die Befruchtung der letzeren überwunden und sich durch die vollbrachte 'Furchtung' des Eies von der ersten zur zweiten Individualitäts-Ordnung erhoben hat, die sogenannte 'Maulbeer-Form' oder 'Brombeer-Form,' welche wir ein für allemal als Morula bezeichnen wollen." ("After the calcareous-sponge organism goes beyond the undifferentiated condition of the egg cell through fertilization, and through completed 'cleavage' of the egg has risen from the first to the second rank of individuality, it forms at first the so-called 'mulberry-form' or 'blackberry-form,' which we will designate once and for all as the morula.")

Keep scrolling for more

Learn More about morula

Dictionary Entries near morula

mortuum vadium

mortwarp

Moru

morula

Morus

morwong

mos

Statistics for morula

Look-up Popularity

Time Traveler for morula

The first known use of morula was in 1875

See more words from the same year

Keep scrolling for more

More Definitions for morula

morula

noun
mor·u·la | \ˈmȯr-(y)ə-lə, ˈmär- \
plural morulae\-ˌlē, -ˌlī \

Medical Definition of morula 

: a globular solid mass of blastomeres formed by cleavage of a zygote that typically precedes the blastula — compare gastrula

Other Words from morula

morular \-lər \ adjective
morulation \ˌmȯr-(y)ə-ˈlā-shən, ˌmär- \ noun

More from Merriam-Webster on morula

Britannica.com: Encyclopedia article about morula

Comments on morula

What made you want to look up morula? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a generally accepted meaning of a word

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble-tiles-that-read-scrabble-quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!