vasodilator
C1/C2Technical/Medical
Definition
Meaning
A substance (e.g., a drug or hormone) that causes the widening of blood vessels.
Any agent, physiological or pharmacological, that relaxes the smooth muscle in the walls of blood vessels, leading to increased blood flow and decreased blood pressure.
Linguistics
Semantic Notes
Primarily used in medical, physiological, and pharmacological contexts. Can refer to the agent itself ('The doctor prescribed a vasodilator') or describe its effect ('vasodilator response').
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling conventions follow standard BrE/AmE patterns (e.g., 'ise' vs. 'ize' in related words like 'vasodilatation' vs. 'vasodilation').
Connotations
Identical technical connotations.
Frequency
Equally low-frequency outside specialised medical/scientific contexts in both dialects.
Vocabulary
Collocations
Grammar
Valency Patterns
The [DRUG] is a vasodilator.[SUBSTANCE] acts as a vasodilator on the [BODY PART].[AGENT] has a vasodilator effect.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[None directly related to the medical term]”
Usage
Context Usage
Business
Extremely rare; possibly in pharmaceutical company reports or investment discussions.
Academic
Common in medical, nursing, pharmacology, and physiology textbooks, research papers, and lectures.
Everyday
Very rare. Might be heard in a patient consultation or a detailed health news segment.
Technical
Core, standard term in medical diagnostics, treatment plans, pharmacology, and physiological research.
Examples
By Part of Speech
verb
British English
- The new medication is designed to vasodilate the coronary arteries.
American English
- The compound vasodilates the peripheral vessels, reducing pressure.
adverb
British English
- The agent acts vasodilatorily on the smooth muscle.
American English
- The substance worked vasodilatorily to improve peripheral circulation.
Examples
By CEFR Level
- The doctor said the medicine works by opening up the blood vessels. (Paraphrase using core meaning)
- Some blood pressure medications are vasodilators, which help relax and widen arteries.
- Nitroglycerin is a potent vasodilator administered sublingually to relieve the symptoms of angina pectoris by increasing coronary blood flow.
Learning
Memory Aids
Mnemonic
Think: 'Vaso' (relating to vessels, like blood vessels) + 'dilator' (something that widens). So, a 'vessel-widener'.
Conceptual Metaphor
A VASODILATOR IS A PIPE OPENER FOR THE BLOODSTREAM.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct calques like *'сосудорасширитель'*. The standard Russian medical term is 'вазодилататор' (vazodilatator). Confusion may arise with the more general 'расширяющее сосуды средство' (rasshiryayushcheye sosudy sredstvo).
Common Mistakes
- Misspelling: 'vaso-dilator', 'vasodilater'. Mispronunciation: stressing the first syllable (/ˈveɪzəʊ.../) instead of the fourth (/...daɪˈleɪtər/).
Practice
Quiz
What is the primary physiological effect of a vasodilator?
FAQ
Frequently Asked Questions
No. A vasodilator widens blood vessels to lower blood pressure. A blood thinner (anticoagulant/antiplatelet) reduces the blood's ability to clot. Their functions are different.
Examples include nitroglycerin (for angina), hydralazine and minoxidil (for hypertension), and sildenafil (Viagra, which has vasodilatory effects).
Generally not simultaneously for the same vascular bed. However, some substances (like certain neurotransmitters) can cause vasodilation in one tissue and vasoconstriction in another, depending on the receptors present.
'Vasodilation' is the process or event of blood vessels widening. A 'vasodilator' is the specific agent (drug, hormone, nerve signal) that causes that process.