coronium

n. [天]氪(一种假设的元素,过去曾认为日冕光谱中的某些明线系氪所产生)

释义与例句

n.
  1. 1.

    A supposed chemical element, hypothesized in the 19th century in order to explain a green emission line seen during the total solar eclipse of 7 August 1869 (actually highly ionized iron).

    历史 不可数

词源

From corona + -ium, coined by a certain A. Gruenwald.

来源：wiktionary