Definition

Adjective 1. Having a tip that ends in a sharp, rigid point: Describes a plant structure, typically a leaf, leaf part, or other projection, that terminates in a hard, pointed spine. * This is a botanical term used to specify that the pointed end is a true spine—a sharp, hardened structure—rather than just a soft or merely pointed tip.

Usage

The term "spine-tipped" is used attributively, almost always directly before the noun it describes (e.g., a spine-tipped leaf, spine-tipped bracts). It is a precise descriptor in botany and horticulture.

Examples

• The spine-tipped leaves of the holly plant provide protection from herbivores.
• Botanists noted the spine-tipped sepals, which are characteristic of that cactus species.
• Be careful when handling the agave; its margins are lined with spine-tipped teeth.

Advanced Usage

• The term can be used in comparative descriptions: "The subspecies is distinguished by its spine-tipped (versus blunt-tipped) phyllaries."
• It can form part of a more complex botanical description: "leaves lanceolate, spine-tipped, with serrate margins."

Variants and Related Words

• Spine (n): The sharp, rigid, pointed structure itself.
• Spinescent (adj): Bearing spines or thorns; tending to form spines.
• Pungent (adj): In botany, having a sharp, stiff point that terminates abruptly (a broader term that can include spine-tipped structures).
• Aristate (adj): Having a bristle-like tip or appendage (the tip is a slender bristle, not necessarily a hardened spine).

Synonyms

• Prickle-tipped
• Thorn-tipped (Note: In precise botany, "thorn," "spine," and "prickle" have different technical definitions, but in general usage they can be synonymous.)

Antonyms

• Blunt-tipped
• Rounded
• Obtuse

Adjective

1. of a plant tipped with a spine