peltate
/'pelti:/
Học thuậtThân thiện
Definition
- Adjective:
- (Botany) Having a rounded shape with the stalk attached at the center of the lower surface, not at the edge: This term describes a specific leaf structure where the leaf blade is typically shield-shaped or circular, and the petiole (leaf stalk) is attached to the underside, near the middle. This is in contrast to leaves where the stalk attaches at the edge or margin.
Usage Examples
- Adjective:
- The nasturtium has distinctive peltate leaves.
- Botanists identified the plant by its peltate foliage.
- In a peltate leaf, the petiole attaches centrally on the underside.
Advanced Usage
- "Peltately" (adverb): In a peltate manner.
- The leaf is attached peltately to the stem.
- "Peltation" (noun): The state or condition of being peltate.
- The degree of peltation can vary among species.
Variants and Related Words
- Peltated: An alternative, less common form of the adjective "peltate."
- Peltoid: Resembling a peltate form.
- Umbonate: While not a direct synonym, this term describes a rounded, shield-like shape with a central projection, sometimes used in similar descriptive contexts in mycology or other fields.
Synonyms
- Shield-shaped: Having the broad, rounded form of a shield, often used interchangeably in botanical descriptions.
- Clypeate: Shield-shaped; a more technical synonym.
Antonyms
- Non-peltate: A general term for any leaf attachment not meeting the peltate criteria.
- Marginate-attached: Describing a leaf where the petiole attaches at the margin or edge.
Related Phrases & Terms
- Peltate scale: A type of scale in plants or animals (e.g., on fish or insects) that has a similar shield-like, centrally attached structure.
- Peltate hair: A botanical hair or trichome that is attached by its center, appearing stalked and disk-like.
Adjective
- (of a leaf shape) round, with the stem attached near the center of the lower surface rather than the margin (as a nasturtium leaf for example)