词根：calc, calcul = lime, stone, to reckon 石灰, 石头, 计算

  来源于拉丁语 calx/calculus 石灰石 / 计算。同义词根有来自拉丁语的rat。-calci- 为 -calc- 的变体，有同形异义词根：-calc- 踢 / 踩；有同类词根（钙和硫都属于化学元素）：-sulf- / -sulph- 硫，而词根 -sulph- 也可以理解为是根据辅音的交替规律由 -sulf- 变来的，属于单 / 双辅音交替规律，如：sulfur 硫磺、sulfite 亚硫酸盐、sulphur 硫磺、sulphite 亚硫酸盐。

同源词：

1. incalculable（无法计算的in(=not) + calcul(=reckon)）
  adj.无法计算的，（数目）巨大的；不可预测的
  Prime numbers of more than 100 digits are inclculate by today's supercomputers.今天的超级计算机也无法计算出超过100位的素数。

2. calculable
  adj.计算的；可信赖的

3. calculate
  v.计算；推算；打算
  calculating adj.计算的；审慎的
  calculated adj.计算出的；精心计划的；故意的；可能的
  calculated crime 蓄意犯罪
  calculator n.计算器；计算者

4. calculation
  n.计算；仔细的分析（或思考等） 
  after much calculation 深思熟虑后

5. calculus
  n.计算法；微积分；结石

6. chalk  [calc 石灰，音变；c → ch,c→k,因此：calc → chalk;由“石灰”制成的→]
  n.粉笔

7. calcarious  [calc 石灰，-arious  复合后缀，...的]
  adj. 石灰质的

8. calcic  [-ic (a.) 表示“…的”]
  adj. 石灰的,含钙的,钙质的

9. calcimine  [-imine (n.) 名词后缀]
  n. 刷墙粉

词根词缀：-ous, -ious, -eous

【来源及含义】Latin: full of or having the qualities of; in chemistry, a suffix denoting that the element indicated by the name bearing it, has a valence lower than that denoted by the termination -ic; as, nitrous, sulphurous, etc., as contrasted with nitric, sulphuric, etc.

【相关描述】Only a small number of the hundreds of examples are presented because there are just too many to include at this time.

【同源单词】abdominous, abiogenous, ablepharous, abstemious, acanthaceous, acanthocephalous