noun
sea air; sea breeze
Only when written 海気
Refers to the air or breeze from the sea, often with a refreshing or salty connotation.
海岸で海気を吸うと気持ちがいい。
Breathing the sea air at the beach feels good.
noun
ocean and atmosphere
Only when written 海気
Technical or literary term for the marine environment and the air above it; used in scientific or poetic contexts.
海気相互作用は気候に大きな影響を与える。
Ocean-atmosphere interactions have a major impact on climate.
noun
type of yarn-dyed silk goods
A traditional silk fabric woven with pre-dyed threads; often used for high-quality kimono and obi. The spelling 甲斐絹 is specific to this meaning.
この着物は甲斐絹で仕立てられています。
This kimono is made of kaiki silk.
The kanji 海気 literally means 'sea air' or 'ocean atmosphere'. The silk-goods sense is written with 甲斐絹, an ateji-like compound where 甲斐 (kai) and 絹 (silk) are used phonetically and semantically; the exact derivation is uncertain.