Actinoida

Pronunciation: /ækˈtɪnɔɪdə/

Definitions of actinoida

noun a taxonomic group of sea anemones and corals characterized by having stinging cells called nematocysts

Example Sentences

A1 Actinoida is a type of sea star found in the ocean.

A2 The Actinoida species is known for its unique feeding habits.

B1 Scientists are studying the behavior of Actinoida in their natural habitat.

B2 The Actinoida phylum includes various species of marine animals.

C1 Research on Actinoida has led to new discoveries in marine biology.

C2 The intricate anatomy of Actinoida has fascinated marine biologists for decades.

Examples of actinoida in a Sentence

formal The Actinoida is an order of marine animals that includes sea lilies and feather stars.

informal Have you ever seen those cool sea lilies? They belong to the Actinoida group.

slang Those funky sea creatures that look like plants? Yeah, they're part of the Actinoida gang.

figurative The Actinoida group moves gracefully in the ocean, resembling dancers in a synchronized routine.

Grammatical Forms of actinoida

• past tense: acted
• plural: actinoidas
• comparative: more actinoida
• superlative: most actinoida
• present tense: actinoida
• future tense: will actinoida
• perfect tense: has acted
• continuous tense: is acting
• singular: actinoida
• positive degree: actinoida
• infinitive: to actinoida
• gerund: acting
• participle: acting

Origin and Evolution of actinoida

First Known Use: 1834 year

Language of Origin: Greek

Story behind the word: The word 'actinoida' originates from the Greek words 'aktinos' meaning ray and 'eidos' meaning form, referring to the radiating appearance of these organisms.

Evolution of the word: Originally used to describe a group of marine invertebrates with radiating tentacles, the term 'actinoida' has evolved to also encompass a group of radioactive elements in the periodic table known as actinides.