coma

意味

• n. 昏睡
• n. 彗発（彗星の頭部）
• n. 彗星収差

英語の定義

• n. a state of deep and often prolonged unconsciousness; usually the result of disease or injury
• n. (botany) a usually terminal tuft of bracts (as in the pineapple) or tuft of hairs (especially on certain seeds)
• n. (astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet; forms as the comet approaches the sun and is warmed

語形変化

複数形

comas

例文

1. n. 昏睡

   The driver was severely injured in the accident and remained in a coma for two weeks.

   その運転手は事故で重傷を負い、2週間昏睡状態が続きました。

2. n. 彗発（彗星の頭部）

   As the comet approached the sun, its coma became much brighter and easier to see through a telescope.

   彗星が太陽に近づくにつれてそのコマ（彗発）がより明るくなり、望遠鏡で観察しやすくなりました。

3. n. 彗星収差

   The engineer redesigned the lens to reduce coma and produce clearer images near the edges.

   技術者はコマ収差を抑え、画像周辺部の映りをより鮮明にするためにレンズを設計し直しました。