| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| calcium hydroxide | |
| —n | |
| lime, slaked lime, hydrated lime, calcium hydrate, caustic lime, Also called: lime hydrate a white crystalline slightly soluble alkali with many uses, esp in cement, water softening, and the neutralization of acid soils. Formula: Ca(OH)2 | |
| slaked lime | |
| —n | |
| another name for calcium hydroxide, esp when made by adding water to calcium oxide | |