revolute

revolute

A leaf has a revolute margin that curls under.

Definition

  1. Adjective (Biology):

    • Rolled backward or downward: "Revolute" describes a leaf, petal, or other plant part that has its margins or edges rolled backward toward the lower surface.
    • Curved outward: In botany, it specifically refers to a margin that is rolled abaxially (away from the upper surface).

  2. Verb (Slang, rare):

    • To engage in revolution: An informal, nonstandard usage meaning to participate in or cause a revolution, though this is not widely accepted in formal English.
Usage Examples

  • Adjective (Biology):

    • The leaves of this fern are revolute, curling downward at the edges. (The leaf margins are rolled backward.)
    • Botanists noted the revolute margins of the flower petals under the microscope. (The edges of the petals were curved outward.)

  • Verb (Slang, rare):

    • He joked that it was time to revolute and overthrow the old system. (An informal use meaning to start a revolution.)
Advanced Usage

  • "Revolute margin": A specific botanical term for leaf edges that roll backward.

    • The revolute margin of the leaf helps reduce water loss in dry climates. (The rolled edge is an adaptation to arid conditions.)

  • "Revolute vs. involute": "Revolute" means rolled backward; "involute" means rolled inward or upward.

    • Compare a revolute leaf (curling down) with an involute one (curling up). (Distinguishing two types of margin curvature.)
Variants and Related Words

  • Revoluted (adj): An alternative form meaning the same as "revolute," though less common.

    • The revolute leaves of the shrub were easily identified. (The leaves had rolled margins.)

  • Revolute (noun, rare): A botanical term for a plant with revolute leaves, though not standard.

Synonyms
  • Rolled backward: curved or turned backward.
  • Curved outward: bent away from the center.
  • Recurved: bent backward or downward (though more general than "revolute").
Related Idioms
  • None directly associated with "revolute" in standard English idioms.
Phrasal Verbs
  • Revolute into: To change into a revolute form (very rare, technical).
    • The leaf margins revolute into a tight curl as the plant dries. (The edges roll backward into a curled shape.)