| Coefficient of inbreeding |
近交系數，親交系數 |
| Coefficient of inertia |
慣性系數 |
| Coefficient of injury |
危害系數 |
| Coefficient of internal friction |
內摩擦系數 |
| Coefficient of regression |
回歸系數 |
| Coefficient of relationship |
親緣系數，血緣系數 |
| Coefficient of reunion |
〔離子〕復合系數 |
| Coefficient of sensitivity |
靈敏系數 |
| coefficient of storage |
蓄水係數 |
| coefficient of transmissibility |
透水量係數 |
| Coefficient of transmission |
透射系數 |
| Coefficient of transparency |
透明系數 |
| Coefficient of utilization of energy |
能量利用系數 |
| Coefficient of variation |
變異系數 |
| coefficient of water storage |
貯水係數 |
| Coelastrum |
空星藻 |
| Coelenterata |
腔腸動物 |
| Coelonotus liaspis (Bleeker) |
無棘海龍 |
| Coelorhynchus kamoharai Matsubara |
蒲原氏鬚鱈 |
| Coelorhynchus kishinouyi Jordan & Snyder |
岸上氏鬚鱈 |
