mentum

• 科学术语，指某些兰科植物唇瓣基部的颏状突起（颏），也指某些软体动物口下的类似结构或下颚。

A scientific term referring to a chin-like projection found in certain orchids, the lower jaw, or a similar structure below the mouth of some mollusks.

1. Botanical structureC2formalscientific

   A chin-like projection formed by the sepals and the base of the column in certain orchids.

   颏（植物学术语）

   • The mentum of this orchid species is particularly prominent.
   • Botanists study the mentum to classify different orchid varieties.
   • The flower's mentum gives it a distinctive appearance.

2. Anatomical featureC2formalmedical

   The protruding part of the lower jaw, also known as the chin.

   下巴

   • The mentum is a key feature in facial reconstruction.
   • Injuries to the mentum can affect speech and eating.
   • The surgeon examined the patient's mentum for fractures.

   同义词chin

3. Zoological structureC2formalscientific

   A chin-like projection below the mouth of certain mollusks.

   动物学结构

   • The mentum of the mollusk helps in feeding.
   • Marine biologists identified the species by its mentum shape.
   • The mentum is a distinguishing characteristic of this snail.