unnilquadium

[ yoo-nil-kwod-ee-uh m ]
/ ˌyu nɪlˈkwɒd i əm /

noun Chemistry, Physics.

former name of rutherfordium. Symbol: Unq
Also called element 104.

Origin of unnilquadium

1975–80; < Latin ūn(us) one + nīl nothing + quad(ri)- + New Latin -ium -ium

Words nearby unnilquadium

unnerve, unnilennium, unnilhexium, unniloctium, unnilpentium, unnilquadium, unnilseptium, unnoticeable, unnoticed, unnumbered, uno

Definition for unnilquadium (2 of 3)

rutherfordium
[ ruhth-er-fawr-dee-uh m, -fohr-, ruhth- ]
/ ˌrʌð ərˈfɔr di əm, -ˈfoʊr-, ˌrʌθ- /

noun Chemistry, Physics.

a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Rf; atomic number: 104.
Formerly unnilquadium, element 104.

Origin of rutherfordium

1969; named after English physicist Ernest Rutherford; see -ium

Definition for unnilquadium (3 of 3)

element 104

noun Chemistry, Physics.

rutherfordium.
Formerly unnilquadium.

Origin of element 104

First recorded in 1975–80

British Dictionary definitions for unnilquadium

rutherfordium
/ (ˌrʌðəˈfɔːdɪəm) /

noun

a transactinide element produced by bombarding californium-249 nuclei with carbon-12 nuclei. Symbol: Rf; atomic number.: 104; atomic wt: 261 Name in the former Soviet Union: kurchatovium

Word Origin for rutherfordium

C20: named after Ernest Rutherford

Scientific definitions for unnilquadium

rutherfordium
[ rŭð′ər-fôr′dē-əm ]

Rf

A synthetic, radioactive element that is produced by bombarding plutonium with carbon or neon ions. Its most stable isotope is Rf 261 with a half-life of 62 seconds. Atomic number 104. See Periodic Table.