hilus: meaning, definition, pronunciation and examples
C2Technical/Medical/Academic
Quick answer
What does “hilus” mean?
The depression or indentation on the surface of an organ where blood vessels, nerves, or ducts enter or exit.
Audio
Pronunciation
Definition
Meaning and Definition
The depression or indentation on the surface of an organ where blood vessels, nerves, or ducts enter or exit.
In anatomy and botany, a small notch, opening, or indentation, particularly one serving as a point of attachment or entrance/exit for structures.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Both use the term exclusively in technical contexts. Spelling is identical. The plural 'hili' is preferred in formal academic texts in both varieties.
Connotations
Purely denotative and clinical in both varieties, with no regional connotative differences.
Frequency
Extremely low frequency in general language. Usage is confined to medical, biological, and anatomical literature and education in both the UK and US.
Grammar
How to Use “hilus” in a Sentence
the hilus of [ORGAN]at the hilusstructures entering through the hilusVocabulary
Collocations
Examples
Examples of “hilus” in a Sentence
adjective
British English
- The hilar lymph nodes were enlarged.
- A hilar mass was detected on the scan.
American English
- The hilar vasculature was carefully dissected.
- Hilar anatomy is complex.
Usage
Meaning in Context
Business
Not used.
Academic
Common in medical, anatomical, and botanical textbooks and research papers. E.g., 'The renal artery enters the kidney at the hilus.'
Everyday
Virtually never used.
Technical
Essential term in surgical, radiological, and pathological descriptions. E.g., 'The mass was located adjacent to the pulmonary hilus.'
Vocabulary
Synonyms of “hilus”
Neutral
Watch out
Common Mistakes When Using “hilus”
- Misspelling as 'hillus' or 'hylis'.
- Using it in non-anatomical contexts.
- Incorrect pluralisation as 'hiluses' in formal writing (prefer 'hili').
- Confusing 'hilus' (the depression) with 'hilum' (the structure within that depression, though often used interchangeably).
FAQ
Frequently Asked Questions
In strict anatomical terminology, the 'hilum' refers to the actual opening or fissure itself, while the 'hilus' is the general depressed area where the hilum is located. However, in common medical usage, the terms are often used interchangeably to mean the indentation where structures enter/exit an organ.
No. It is specific to organs that have a concave area serving as a conduit for vessels and ducts, such as the kidneys, lungs, spleen, lymph nodes, and ovaries. It is not used for organs like the heart or brain.
Absolutely not. It is a highly specialized term unknown to the general public. Its use is confined to professional and academic contexts in medicine and biology.
The correct Latin plural is 'hili' (pronounced /ˈhaɪ.laɪ/). The Anglicised plural 'hiluses' is also acceptable but is less common in formal technical writing.
The depression or indentation on the surface of an organ where blood vessels, nerves, or ducts enter or exit.
Hilus is usually technical/medical/academic in register.
Hilus: in British English it is pronounced /ˈhaɪ.ləs/, and in American English it is pronounced /ˈhaɪ.ləs/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of a **HI**ghway **L**eaving/entering a US state – the hilus is the 'highway entrance/exit' for vessels on an organ.
Conceptual Metaphor
A PORTAL or GATEWAY to an organ. A DOORWAY for vital connections.
Practice
Quiz
In which field is the term 'hilus' primarily used?