aqueous humour: meaning, definition, pronunciation and examples
C2technical/medical
Quick answer
What does “aqueous humour” mean?
The clear, watery fluid that fills the space between the cornea and the lens of the eye, maintaining intraocular pressure and nourishing the cornea and lens.
Audio
Pronunciation
Definition
Meaning and Definition
The clear, watery fluid that fills the space between the cornea and the lens of the eye, maintaining intraocular pressure and nourishing the cornea and lens.
In a broader metaphorical sense, it can refer to any transparent, essential fluid or medium that fills a space and maintains structural integrity or function, though this usage is rare and highly specialized.
Dialectal Variation
British vs American Usage
Differences
The spelling of 'humour' (UK) vs. 'humor' (US). The pronunciation of 'aqueous' differs slightly. The term is equally technical and rare in both varieties.
Connotations
Purely denotative with no cultural connotations. It is a precise anatomical term.
Frequency
Extremely low frequency in general language but standard within medical and optometry fields.
Grammar
How to Use “aqueous humour” in a Sentence
The aqueous humour + VERB (fills, nourishes, maintains)An obstruction in + the aqueous humour drainageVocabulary
Collocations
Examples
Examples of “aqueous humour” in a Sentence
adjective
British English
- The aqueous humour dynamics were studied.
- Aqueous humour production is constant.
American English
- Aqueous humor dynamics were studied.
- Aqueous humor production is constant.
Usage
Meaning in Context
Business
Not used.
Academic
Used in medical, biological, and optometry textbooks, research papers, and lectures.
Everyday
Virtually never used. A patient might hear it during a detailed explanation of glaucoma from a specialist.
Technical
The primary context. Used in ophthalmology diagnoses (e.g., 'impaired aqueous humour outflow'), surgical notes, and physiological descriptions.
Vocabulary
Synonyms of “aqueous humour”
Neutral
Weak
Vocabulary
Antonyms of “aqueous humour”
Watch out
Common Mistakes When Using “aqueous humour”
- Misspelling 'aqueous' as 'aquious' or 'aquous'.
- Confusing it with 'vitreous humour'.
- Using 'humor' in a comedic sense within this term.
- Pronouncing 'aqueous' as /əˈkwiː.əs/ instead of /ˈeɪ.kwi.əs/.
FAQ
Frequently Asked Questions
Both are correct depending on the variety of English. Use 'aqueous humour' for British English and 'aqueous humor' for American English. The meaning is identical.
If the drainage system (the trabecular meshwork) is blocked, aqueous humour builds up, increasing intraocular pressure. This can damage the optic nerve, leading to a condition called glaucoma.
No. Tears are produced by lacrimal glands outside the eye and lubricate the outer surface of the cornea. Aqueous humour is produced inside the eye (by the ciliary body) and circulates within the anterior chamber.
Not directly, as it is completely transparent. However, an eye care professional can observe the space it fills (the anterior chamber) using a slit lamp microscope.
The clear, watery fluid that fills the space between the cornea and the lens of the eye, maintaining intraocular pressure and nourishing the cornea and lens.
Aqueous humour is usually technical/medical in register.
Aqueous humour: in British English it is pronounced /ˌeɪ.kwi.əs ˈhjuː.mə/, and in American English it is pronounced /ˌeɪ.kwi.əs ˈhjuː.mɚ/ or /ˌæk.wi.əs-/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: 'AQUA' means water. Aqueous humour is the 'watery fluid' in the front part of your eye. The other fluid, vitreous humour, is like 'glass' (vitreous) – thick and gel-like.
Conceptual Metaphor
Not applicable for common usage. In a highly forced metaphor, it could represent a 'clear, sustaining medium' within a closed system.
Practice
Quiz
What is the primary function of the aqueous humour?