Definition

Relating to or resembling a type of small aquatic animal that is part of the class Hydrozoa, often found in marine environments.

Example

The hydroid species displayed unique characteristics that fascinated marine biologists.

Conversation

Did you see that new exhibit at the aquarium?

Yeah, I loved how they showcased the hydroid species.

I found the hydroid display really fascinating, especially their movement.

Same here! They look so unique and elegant in the water.

Synonyms & Antonyms

Definition

A type of small sea creature that lives in colonies and has a polyp form, which is the main stage of its life cycle, rather than a jellyfish form.

Example

The hydroid colony swayed gently in the ocean currents.

Conversation

I just learned about this fascinating creature called a hydroid in my biology class.

Oh really? What makes it so interesting?

It's a polyp that lives in colonies, which is quite different from jellyfish.

Root Explanation

Hydroid is formed from "hydro-" (from Greek "hudor", meaning water) and "-oid" (from Greek "eidos", meaning form or shape). The word refers to a form or shape related to water, often used in biological contexts to describe organisms resembling or related to hydras, which are aquatic creatures.

Memory Tip

Think of 'water' ('hydro-') and 'form' ('-oid') to remember that 'hydroid' refers to a shape or form associated with water.

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