odd-pinnate
Học thuậtThân thiện
Definition
Adjective (Botany): - Describing a compound leaf where leaflets are arranged in pairs along a central stem (rachis), with one unpaired leaflet present at the very tip (apex).
Usage
This term is used specifically in botany to describe the structure of a leaf. It is a technical descriptor. - The botanist identified the tree by its odd-pinnate leaves. - Ash and walnut trees typically have odd-pinnate foliage.
Advanced Usage
- The condition of being odd-pinnate is called imparipinnate, which is a direct synonym.
- This structure contrasts with even-pinnate (or paripinnate) leaves, which have a pair of leaflets at the apex and no terminal leaflet.
Variants and Related Words
- Imparipinnate (adj.): A synonym for odd-pinnate.
- Pinnate (adj.): The broader category; having leaflets arranged on either side of a rachis.
- Rachis (n.): The central stem of a compound leaf.
Synonyms
- Imparipinnate
Antonyms
- Even-pinnate
- Paripinnate
Adjective
- (a leaf shape) pinnate with a single leaflet at the apex