astatine

/ˈastətiːn/ /ˈæstəˌtin/

Meanings

noun

A highly radioactive chemical element (symbol At), one of the halogens, with atomic number 85.

Examples :

"Due to its extreme radioactivity and rarity, astatine is mostly studied in specialized laboratories and has no common uses in everyday life. "

Related Words

radioactivity noun

/ˌreɪdioʊækˈtɪvɪti/ /ˌreɪdiːoʊækˈtɪvɪti/

Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.

"The old watch contained radium, which caused its hands to glow in the dark due to radioactivity. "

symbol noun

/ˈsɪmbəl/

A character or glyph representing an idea, concept or object.

"$ is the symbol for dollars in the US and some other countries."

specialized verb

/ˈspɛʃəˌlaɪzd/ /ˈspɛʃəˌlaɪzd/

To make distinct or separate, particularly:

"The chef specialized his menu, separating the vegetarian dishes from the meat dishes. "

radioactive noun

/ˌɹeɪdioʊˈaktɪv/ /ˌɹeɪdioʊˈæktɪv/

Any radioactive substance.

"The radioactive was carefully stored in a lead-lined container at the science lab. "

element noun

/ˈɛlɪmənt/

One of the simplest or essential parts or principles of which anything consists, or upon which the constitution or fundamental powers of anything are based.

"Letters are the elements of written language."

everyday noun

/ˈɛvɹiˌdeɪ/

(rare) the ordinary or routine day or occasion

"My everyday is filled with work and family responsibilities. "

halogens noun

/ˈhælədʒənz/ /ˈheɪlədʒənz/

Any element of group 17, i.e. fluorine, chlorine, bromine, iodine and astatine, which form a salt by direct union with a metal.

"Table salt, or sodium chloride, is formed when the metal sodium reacts with chlorine, one of the halogens. "

studied adjective

/ˈstʌdid/

Practiced; self-conscious; careful.

"She gave a studied reply."

highly adverb

/ˈhaɪli/

In a high or esteemed manner.

"He spoke highly of you."

extreme noun

/ɛkˈstɹiːm/ /ɪkˈstɹim/

The greatest or utmost point, degree or condition.

"The extreme of the workday was the three-hour meeting. "

laboratories noun

/ləˈbɔːrətɔːriz/ /ləˈbɑːrətɔːriz/ /ˈlæbrətɔːriz/

A room, building or institution equipped for scientific research, experimentation or analysis.

"Scientists conduct experiments in laboratories to discover new medicines. "

chemical noun

/ˈkɛmɪkəl/

Any specific chemical element or chemical compound or alloy.

"The scientist studied the chemical composition of the soil sample. "