1. A series of small, rounded projections or indentations along an edge or margin, resembling the teeth of a saw.
Usage: Plural of crenation.; Common in biology and botany to describe leaf edges and cellular structures.
2. In architecture, a series of square notches or indentations along the top of a fortified wall or battlement.
Usage: Also called crenels or battlements.; Architectural/historical term.
3. In cell biology, the formation of irregular edges or projections on the surface of a cell, often resulting from osmotic stress or damage.
Usage: Medical/scientific term.

Examples

• The oak leaf displayed fine crenations along its margins.
• Medieval castles featured crenations on their defensive walls to protect archers.
• The microscope revealed crenations on the red blood cells exposed to the hypertonic solution.
• Botanists use crenations as a key feature to identify and classify different plant species.
• The fortress's crenations allowed defenders to fire arrows while remaining protected.
• Under osmotic stress, the cell membrane developed crenations as water left the cytoplasm.