| OCTAN | • octan adj. Occurring every eight days. • octan n. A fever that recurs every eight days. • OCTAN n. a fever recurring every eight day. |
| OCTANE | • octane n. (Organic chemistry) Any of the eighteen isomeric aliphatic hydrocarbons (C8H18) found in petroleum… • octane n. Octane number. • OCTANE n. any of a series of saturated hydrocarbons. |
| OCTANS | • octans n. Plural of octan. • Octans prop.n. (Astronomy) A small circumpolar constellation of the southern sky, said to resemble an octant. It lies… • OCTAN n. a fever recurring every eight day. |
| OCTANT | • octant n. The eighth part of a circle; an arc of 45 degrees. • octant n. (Astrology) The aspect of two planets that are 45°, or one-eighth of a circle, apart. • octant n. (Geometry) The eighth part of a disc; a sector of 45 degrees; half a quadrant. |
| OCTANES | • octanes n. Plural of octane. • OCTANE n. any of a series of saturated hydrocarbons. |
| OCTANOL | • octanol n. (Organic chemistry) Any of many isomers of the saturated aliphatic alcohol having eight carbon atoms… • OCTANOL n. an alcohol. |
| OCTANTS | • octants n. Plural of octant. • OCTANT n. an eighth part of a circle. |
| OCTANGLE | • octangle n. A geometric figure with eight corners, an octagon. • OCTANGLE n. an octagon. |
| OCTANOLS | • octanols n. Plural of octanol. • OCTANOL n. an alcohol. |
| OCTANTAL | • octantal adj. Relating to an octant. • OCTANTAL adj. relating to an octant. |
| OCTANGLES | • octangles n. Plural of octangle. • OCTANGLE n. an octagon. |
| OCTANDRIAN | • OCTANDRIAN adj. of or pertaining to the Octandria; having eight distinct stamens, also OCTANDROUS. |
| OCTANDROUS | • octandrous adj. (Botany) Having eight stamens. • OCTANDROUS adj. of or pertaining to the Octandria; having eight distinct stamens, also OCTANDRIAN. |
| OCTANGULAR | • octangular adj. Octagonal, with eight angles. • OCTANGULAR adj. having eight angles. |
| OCTANEDIOIC | • OCTANEDIOIC adj. designating a type of acid found in suberin and castor oil. |