| Octad | n. [ Gr. &unr_;, &unr_;, the number eight. ] |
| calcium stearate | (n) an insoluble calcium salt of stearic acid and palmitic acid; it is formed when soap is mixed with water that contains calcium ions and is the scum produced in regions of hard water, Syn. calcium octadecanoate |
| eight | (n) the cardinal number that is the sum of seven and one, Syn. 8, octad, eighter, octonary, VIII, octet, eighter from Decatur, ogdoad |
| stearic acid | (n) a waxy saturated fatty acid; occurs widely as a glyceride in animal and vegetable fats, Syn. octadecanoic acid |