pinnatifid
Definition
Adjective: - (Botany, of a leaf shape) Deeply divided into lobes, with the clefts or incisions extending more than halfway toward the midrib or central axis, but not completely separating into distinct, independent leaflets.
Usage
This term is used specifically in botanical descriptions to classify and describe the morphology of leaves. - The dandelion has pinnatifid leaves with deep, irregular lobes. - Botanists noted the pinnatifid nature of the fern's fronds.
Advanced Usage
- Technical Description: In precise botanical terminology, "pinnatifid" describes a specific depth of division. It is part of a continuum of terms including "pinnatipartite" (clefts reaching close to the midrib) and "pinnatisect" (clefts reaching almost to the midrib, appearing almost separate).
- The leaf was described as pinnatifid, with lobes separated by sinuses cut about three-quarters of the way to the midvein.
Variants and Related Words
- Pinnate (adj): Having leaflets arranged on either side of a common axis, like a feather.
- Pinnatipartite (adj): Cleft or divided almost to the midrib.
- Pinnatisect (adj): Deeply cut into lobes that are almost separate, appearing pinnate but with connected leaflets.
- Lobed (adj): A more general term for leaves with projections.
Synonyms
- Deeply lobed
- Cleft
- Incised
Antonyms
- Entire (of a leaf margin): Having a smooth, continuous edge without indentations.
- Undivided
Adjective
-
(of a leaf shape) cleft nearly to the midrib in broad divisions not separated into distinct leaflets
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