callus

• 指皮肤或植物组织因反复受压、摩擦或愈合过程而增厚、变硬的部位。

A noun referring to a thickened or hardened area of skin or plant tissue, often caused by repeated pressure, friction, or as part of a healing process.

1. Thickened skinB1formalmedical

   A thickened, hardened area of skin caused by repeated pressure or friction, often on hands or feet.

   老茧

   • He developed a callus on his palm from lifting weights.
   • Wearing tight shoes can cause a callus on the heel.
   • The guitarist had a callus on his fingertip from playing.

   同义词callositycornhardeningthickening

2. Bone healing tissueC1formalmedical

   A mass of bony tissue that forms around the ends of a fractured bone during the healing process.

   骨痂

   • The X-ray showed a callus forming around the fracture site.
   • A callus helps stabilize the broken bone as it heals.
   • Doctors monitor the callus development to ensure proper recovery.

3. Plant tissue growthC2formalscientific

   A localized thickening of plant tissue, often a stiff protuberance, such as on the lip of an orchid.

   愈伤组织

   • The orchid's lip had a distinct yellow callus.
   • Botanists study the callus formation in certain plant species.
   • The callus on the flower aids in pollination.

• 指皮肤因反复摩擦或受压而变硬、增厚，形成胼胝（老茧）；也可指这种变硬增厚的过程。

A verb meaning to form or develop a hardened, thickened area of skin, typically as a result of repeated friction or pressure.

1. Cause a callus to form onB2formalmedical

   To cause a thickened, hardened area of skin to develop on a part of the body, typically due to repeated friction or pressure.

   使生老茧

   • Years of playing the guitar had callused his fingertips.
   • The constant use of heavy tools callused the worker's palms.
   • Walking barefoot on rough ground can callus the soles of your feet.

   同义词hardeninduratethickentoughen

2. Form a callus or callusesB2formalmedical

   To develop a thickened, hardened area of skin as a protective response to repeated friction or pressure.

   起老茧

   • His hands began to callus after weeks of manual labor.
   • The skin on her feet callused from running long distances.
   • If you keep rowing without gloves, your hands will callus.

   同义词hardeninduratethickentoughen