RADIOACTIVE

radioactive

(adjective) exhibiting or caused by radioactivity; “radioactive isotope”; “radioactive decay”; “radioactive fallout”

Source: WordNet® 3.1


Etymology

Adjective

radioactive (not comparable)

Exhibiting radioactivity.

(figurative, rare) Dangerous and disgusting, particularly of people or ideas.

Noun

radioactive (plural radioactives)

Any radioactive substance.

Source: Wiktionary


Ra`di*o-ac"tive, a. [Radio-+ active.] (Physics)

Definition: Capable of luminescence under the action of cathode rays, X rays, or any of the allied forms of radiation. -- Ra`di*o- ac*tiv"i*ty, n.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

12 June 2025

RAREFACTION

(noun) a decrease in the density of something; “a sound wave causes periodic rarefactions in its medium”


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Coffee Trivia

According to Guinness World Records, the largest coffee shop is the Al Masaa Café, which has 1,050 seats. The coffee shop was inaugurated in Riyadh, Saudi Arabia, on 13 August 2014.

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