noun
- a small aquatic cnidarian animal that typically forms branching colonies and has a cylindrical body with tentacles around the mouth
Usage: biology
adjective
- relating to or resembling a hydroid
Usage: biology
Examples
- The marine biologist studied the hydroid colonies growing on the pier pilings.
- Hydroid polyps reproduce both sexually and asexually.
- The aquarium display featured several species of colorful hydroids.
- Students examined hydroid specimens under the microscope.
- The hydroid structure consists of a stem-like body with feeding tentacles.
- Researchers discovered new hydroid species in the deep ocean.
- The hydroid colony expanded rapidly in the favorable conditions.