odd-pinnate leaf
Definition
Noun: - A compound leaf structure where leaflets are arranged in pairs along a central stem (rachis), with one unpaired leaflet terminating at the apex (tip). This is a specific botanical term describing the appearance of a leaf.
Usage
This term is used in botany and plant sciences to precisely describe leaf morphology. - The rose plant is easily identified by its odd-pinnate leaf. - Botanists noted that the ash tree has an odd-pinnate leaf structure.
Advanced Usage
- The term is often used in dichotomous keys for plant identification.
- It can be contrasted with "even-pinnate leaf," which has no terminal leaflet, ending in a pair of leaflets.
Variants and Related Words
- Odd-pinnate (adjective): Describing the characteristic of having such a leaf structure.
- The hickory tree has odd-pinnate compound leaves.
- Pinnately compound leaf: The broader category to which odd-pinnate leaves belong.
- Terminal leaflet: The single leaflet at the apex of an odd-pinnate leaf.
Synonyms
- Imparipinnate leaf: A technical synonym used in botanical taxonomy.
Related Phrases/Idioms
This is a highly technical term with no common idiomatic or phrasal verb usage.
Noun
-
a pinnate leaf with a single leaflet at the apex
