luminal
Upper-Intermediate (B2)
IPA: /ˈluːmɪnəl/
KK: /ˈluːmɪnəl/
adjective
Definition
Relating to the inner open space of a tubular structure, such as a blood vessel or a part of the body.
Example
The doctor explained how the luminal area of the artery can become narrowed due to plaque buildup.
Comparatives & Superlatives
Comparative: more luminal
Superlative: most luminal
Conversation
Have you seen the luminal effects in that new light fixture?
Yeah, it really brightens up the room nicely!
I love how the luminal glow makes everything feel more inviting.
Exactly! It creates such a warm atmosphere.
Synonyms & Antonyms
Synonyms
luminous
radiant
illuminated
Antonyms
dark
dim
obscure
noun
Definition
A type of medication used to calm or sedate a person, often used in medical settings.
Example
The doctor prescribed a luminal to help the patient relax before the procedure.
Conversation
I heard that taking luminal can help with anxiety.
Really? I didn't know that; I thought it was just for sleep.
Yeah, some people use luminal as a sedative during stressful times.
Root Explanation
**Luminal** → It is formed from "lumen" (from Latin, meaning light) and the suffix "-al" (meaning pertaining to). The word "luminal" refers to something that is pertaining to or related to light.
Memory Tip
Think of 'lumen' which means light, and remember that 'luminal' describes something related to light.
Visually Confused Words
voluminal
ruminal
liminal
cuminal
alumnal
alumina
uinal
culminal