Oort cloud

短语

奥尔特云

词形变化

Oort clouds 复数 Oort clouds the Oort cloud

释义与例句

n.
  1. 1.

    A roughly spherical region of space composed of comet-like bodies and other minor planets and asteroids that orbit distantly in a planetary system.

    天文
name
  1. 1.

    Alternative letter-case form of Oort Cloud (“the Solar System's Oort cloud”).

词汇关系

名词

上位词 4

collection accumulation aggregation assemblage

词源

A cloud-like structure, named after Dutch astronomer Jan Oort, who proposed it.

来源：wiktionary