stylet

• 名词，指细小的针状结构或附属物，尤指缓步动物及某些无脊椎动物用于刺穿和吸食的刺吸式口器或吻针。也可泛指细针、探针或小刺。

A noun referring to a small, needle-like appendage or structure, particularly the feeding organ found in tardigrades and some other invertebrates.

1. Feeding organ of a tardigradeC2formalscientific

   A small, needle-like appendage used by tardigrades (water bears) to pierce and feed on plant cells or small organisms.

   口针

   • The tardigrade uses its stylet to puncture the cell wall of algae.
   • Under the microscope, the stylet of the water bear is clearly visible.
   • The stylet retracts when the tardigrade is not feeding.

2. Surgical instrumentC1formalmedical

   A thin, pointed probe or wire used in medical procedures to guide a catheter or drain a cavity.

   穿刺针芯

   • The surgeon inserted a stylet to guide the catheter into the vein.
   • A stylet is often used during lumbar punctures.
   • The medical team carefully removed the stylet after placement.

   同义词mandrelprobewire