hyostylic

hyostylic — adjective

  • hyostylicpositive
  • more hyostyliccomparative
  • most hyostylicsuperlative

1. describing a type of jaw structure in fish where the lower part of the jaw is co

1.形容詞C2
釋義

describing a type of jaw structure in fish where the lower part of the jaw is connected to the skull by a single rod-shaped bone (the hyomandibular), so the jaw can be pushed forward when the fish opens its mouth.

例句

Most ray-finned fish have a hyostylic jaw that can push forward to catch food.

hyostylic + noun (jaw) for fish anatomy

The biologist examined the hyostylic skull of the perch under a microscope.

hyostylic + noun (skull) as technical description

反義詞
  • amphistylic

    describes a fish jaw suspended by two points (the hyomandibular and the palatoquadrate itself), rather than one

  • holostylic

    describes a jaw fused directly to the skull without a movable joint, found in some primitive fish

文法句型

hyostylic + noun (jaw, skull, suspension)

用法筆記

This term is used mainly in ichthyology (the study of fish) and comparative anatomy. It contrasts with amphistylic and holostylic, which describe different fish jaw-support patterns.

常見錯誤

❌The fish has a hyostylic jaw connection.
✅The fish has a hyostylic jaw.
💡'hyostylic' already describes the type of connection; adding 'connection' is redundant.
❌Hyostylic fish can move their jaw.
✅Fish with a hyostylic jaw can move their upper jaw forward.
💡'hyostylic' describes the jaw structure, not the fish directly.