also: さいこつ · えらぼね
Anatomical term for the jawbone; often used in medical or biological contexts. Cross-referenced with 顎骨 (jawbone).
See also: 顎骨
branchial arches; gill arches
Specifically refers to the bony structures supporting the gills in fish; used in ichthyology and anatomy.
The jawbone is the main bone that forms the lower jaw.
Remove the fish's jawbone before cooking.
The gill arches of fish play an important role in respiration.
Standard kanji spelling for the anatomical term; reading さいこつ is the most common pronunciation in medical and biological contexts.
Mixed kanji-katakana spelling; reading エラぼね is used in everyday contexts, especially for fish gill bones.
Mixed kanji-hiragana spelling; reading えらぼね is common in informal writing.
Compound of 鰓 (gills) and 骨 (bone). The reading さいこつ is the on'yomi, while えらぼね is a kun'yomi compound. The exact historical derivation is uncertain, but the term is used in anatomical contexts.