ductless gland
C1-C2 / Very Low-FrequencyFormal, Technical, Academic, Medical
Definition
Meaning
An organ that secretes hormones directly into the bloodstream, not through ducts.
Any of the glands of the endocrine system, responsible for regulating bodily functions through chemical messengers (hormones).
Linguistics
Semantic Notes
This is a compound technical term. The word 'ductless' is the defining characteristic, distinguishing these glands from exocrine glands (e.g., salivary, sweat).
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning. The term is used identically in both medical and academic contexts.
Connotations
Purely technical/medical, with no cultural connotations.
Frequency
Equally low-frequency in both varieties, confined to specialised fields.
Vocabulary
Collocations
Grammar
Valency Patterns
The [pituitary/thyroid] is a ductless gland.Ductless glands [secrete/produce] [hormones].Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None”
Usage
Context Usage
Business
Not used.
Academic
Used in biology, medicine, and physiology textbooks and lectures.
Everyday
Virtually never used.
Technical
Core term in endocrinology and medical diagnostics.
Examples
By Part of Speech
verb
British English
- The tissue was later determined to duct (not a valid verb for this word).
American English
- (No verb form exists for 'ductless gland')
adverb
British English
- (No adverb form)
American English
- (No adverb form)
adjective
British English
- The ductless gland activity was measured.
American English
- She researched ductless-gland disorders.
Examples
By CEFR Level
- (Not applicable for this level)
- (Rarely encountered at this level)
- The pituitary is a key ductless gland in the brain.
- Unlike sweat glands, ductless glands release hormones.
- The pathophysiology involved several ductless glands, including the adrenal cortex and the thyroid.
- Early endocrinology focused on identifying which organs functioned as ductless glands.
Learning
Memory Aids
Mnemonic
Think: 'DUCT-LESS' = 'no tube' -> the gland has NO DUCT/tube to carry its secretion, so it goes directly into the blood.
Conceptual Metaphor
A broadcasting station (sending signals/hormones directly into the air/bloodstream without wires/ducts).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not translate literally as 'железа без трубы'. The standard Russian equivalent is 'железа внутренней секреции' or 'эндокринная железа'.
Common Mistakes
- Confusing with 'endocrine system' (the system) vs. 'ductless gland' (a component).
- Incorrect spelling: 'ducktless gland', 'ductles gland'.
Practice
Quiz
What is the defining feature of a ductless gland?
FAQ
Frequently Asked Questions
Yes, they are synonyms in modern medical terminology.
The pituitary gland, thyroid gland, adrenal glands, and pancreas (specifically the islets of Langerhans) are all ductless glands.
An exocrine gland, which secretes its products (like sweat, saliva, tears) through a duct to a specific surface.
It highlights the key anatomical and functional difference in how these glands deliver their secretions compared to other glands in the body.