Actinoid

Pronunciation: /ˈæktɪnɔɪd/

Definitions of actinoid

noun a type of mineral that has a radiating or star-like crystal structure

Example Sentences

A1 Actinoids are a group of chemical elements.

A2 The actinoid series includes elements such as uranium and thorium.

B1 Scientists study the properties of actinoids in order to understand their behavior.

B2 Actinoids have unique electronic configurations that make them important in nuclear reactions.

C1 The actinoid elements have complex structures that require advanced knowledge to study.

C2 Research on actinoids has led to advancements in nuclear energy technology.

Examples of actinoid in a Sentence

formal Actinoid minerals are commonly found in metamorphic rocks.

informal I heard actinoid minerals are pretty cool to study in geology class.

slang Have you seen those actinoid rocks? They're lit!

figurative His personality was like an actinoid mineral, hard to break through but beautiful once you do.

Grammatical Forms of actinoid

• past tense: actinoided
• plural: actinoids
• comparative: more actinoid
• superlative: most actinoid
• present tense: actinoids
• future tense: will actinoid
• perfect tense: has actinoided
• continuous tense: is actinoiding
• singular: actinoid
• positive degree: actinoid
• infinitive: to actinoid
• gerund: actinoiding
• participle: actinoided

Origin and Evolution of actinoid

First Known Use: 1835 year

Language of Origin: Greek

Story behind the word: The word 'actinoid' originated from the combination of the Greek word 'aktinos' meaning ray or beam, and the suffix '-oid' meaning resembling or like.

Evolution of the word: Originally used in the field of chemistry to describe elements with properties similar to actinium, the term 'actinoid' has evolved to also refer to a group of marine invertebrates known as actinians or sea anemones due to their radial symmetry resembling rays or beams.