superheavy

[ soo-per-hev-ee ]
/ ˌsu pərˈhɛv i /

adjective, su·per·heav·i·er, su·per·heav·i·est.

Chemistry, Physics. pertaining to any of a series of elements having an atomic number greater than 103.
heavier than usual for its kind: a superheavy oil; superheavy magnetic monopoles.

Example sentences from the Web for superheavy

British Dictionary definitions for superheavy

superheavy
/ (ˌsuːpəˈhɛvɪ) /

adjective

physics denoting or relating to elements of high atomic number (above 109) postulated to exist with special stability as a consequence of the shell model of the nucleus