morula: meaning, definition, pronunciation and examples
C2 / SpecializedAcademic / Technical / Scientific
Quick answer
What does “morula” mean?
An early stage in embryonic development, consisting of a solid ball of cells resulting from the division of a fertilized ovum.
Audio
Pronunciation
Definition
Meaning and Definition
An early stage in embryonic development, consisting of a solid ball of cells resulting from the division of a fertilized ovum.
In a broader or metaphorical sense, can refer to any compact, cluster-like structure or the initial, foundational stage of a complex system.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling is consistent. Usage is identical across both scientific communities.
Connotations
Purely technical, with no cultural or colloquial connotations in either variety.
Frequency
Extremely low frequency in general language. Used with identical rarity and precision in UK and US academic texts.
Grammar
How to Use “morula” in a Sentence
The embryo develops *into* a morula.The morula consists *of* 16-32 cells.Researchers observed the formation *of* a morula.Vocabulary
Collocations
Examples
Examples of “morula” in a Sentence
adjective
British English
- The morular stage is critical for compaction.
- They identified morula-like structures in the culture.
American English
- Morula-stage embryos were collected for analysis.
- The morular morphology was examined under the microscope.
Usage
Meaning in Context
Academic
Used precisely in embryology textbooks and research papers to denote the stage following cleavage and preceding blastulation.
Everyday
Virtually never used in everyday conversation.
Technical
Core term in reproductive biology, assisted reproductive technology (ART), and developmental genetics.
Vocabulary
Synonyms of “morula”
Neutral
Weak
Vocabulary
Antonyms of “morula”
Watch out
Common Mistakes When Using “morula”
- Mispronouncing as /məˈruːlə/ (like 'formula').
- Using it to describe later embryonic stages.
- Spelling as 'morulla' or 'morular'.
- Treating it as a countable noun in a general sense (e.g., 'three morulas') without clear biological context.
FAQ
Frequently Asked Questions
No, they are consecutive stages. The morula is a solid ball of cells. It then develops a fluid-filled cavity to become a blastocyst.
No, a morula is microscopic, typically about 0.1-0.2 mm in diameter, requiring a microscope for observation.
The term is primarily used for mammals. Other animal groups have analogous but differently named early embryonic stages.
It comes from Latin 'morum', meaning 'mulberry', due to the visual resemblance of the cell cluster to a mulberry fruit.
An early stage in embryonic development, consisting of a solid ball of cells resulting from the division of a fertilized ovum.
Morula is usually academic / technical / scientific in register.
Morula: in British English it is pronounced /ˈmɒrʊlə/, and in American English it is pronounced /ˈmɔːrjʊlə/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of 'MORULA' as a 'MORE solid ball of cells' – MORE cells packed together tightly after division.
Conceptual Metaphor
FOUNDATION / CLUSTER. The morula is metaphorically the foundational 'building block' cluster from which the complex organism unfolds.
Practice
Quiz
What immediately follows the morula stage in mammalian embryonic development?