adjective
- having the shape of a needle; needle-shaped
Usage: technical; botanical
Examples
- The pine tree’s aciform leaves help it conserve water in dry conditions.
- Under the microscope, the crystals appeared aciform and sharp.
- The cactus displayed aciform spines along its surface.
- Aciform structures are common in coniferous plants.
- The mineral formed aciform crystals in the rock sample.