callus

noun

1. (botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid

2. bony tissue formed during the healing of a fractured bone

3. an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot)

Synonym: callosity

verb

1. form a callus or calluses

e.g. His foot callused

2. cause a callus to form on

e.g. The long march had callused his feet

1. 胼胝;老茧;硬结
A callus is an unwanted area of thick skin, usually on the palms of your hands or the soles of your feet, which has been caused by something rubbing against it.

1.

1. 骨痂：6)骨折的愈合:骨折愈合是一个连续的过程,其基本过程是先形成肉芽组织,再由成骨细胞在肉芽组织上产生新骨称为骨痂(callus)依靠骨痂使骨折断端连接并固定.

2. 胼胝：2.胼胝(Callus)为蜡黄色,扁平或隆起的限局性角化增厚. 质坚硬,表面皮纹清晰可见,局部汗液分泌减少,感觉迟钟,可有轻度压痛. 好发于掌跖,与职业有关者也可见于其他受压部位.

3. 愈伤组织：愈伤组织及其形成 愈伤组织(callus)原指植物体的局部受到创伤刺激后,在伤口表面新生的组织. 它由活的薄壁细胞组成,可起源于植物体任何器官内各种组织的活细胞. 在植物体的创伤部分,愈伤组织可帮助伤口愈合;在嫁接中,

4. 愈合组织：我们利用现有的酸味种及甜味种各l0株,以环状剥皮的方法再以水苔包裹,外包塑料布,上下敷紧,进行试验,结果显示酸味种经压条处理后1个月即有80%生根率,而甜味种经3个月试验期则仅出现愈合组织(Callus)并无根发生.