| DECOCT | • decoct v. (Cooking) To make an infusion. • decoct v. (Cooking) To reduce, or concentrate by boiling down. • decoct v. (Figurative) To heat as if by boiling. |
| DOCTOR | • doctor n. A physician; a member of the medical profession; one who is trained and licensed to heal the sick or… • doctor n. A person who has attained a doctorate, such as a Ph.D. or Th.D. or one of many other terminal degrees… • doctor n. A veterinarian; a medical practitioner who treats non-human animals. |
| NOCTUA | • Noctua prop.n. A taxonomic genus within the family Noctuidae – the yellow underwing moths. • NOCTUA n. (Latin) a general name for any moth of the family Noctuidae. |
| OCTADS | • octads n. Plural of octad. • OCTAD n. a group of eight. |
| OCTALS | • octals n. Plural of octal. • OCTAL n. a number system with a base of eight. |
| 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. |
| OCTAVE | • octave n. (Music) An interval of twelve semitones spanning eight degrees of the diatonic scale, representing a… • octave n. (Music) The pitch an octave higher than a given pitch. • octave n. (Music) A coupler on an organ which allows the organist to sound the note an octave above the note of… |
| OCTAVO | • octavo n. (Paper, printing) A sheet of paper 7 to 10 inches (= 17.78 to 25.4 cm) high and 4.5 to 6 inches (= 11… • octavo n. (Printing) A book of octavo pages. • OCTAVO n. (Latin) a page size, also EIGHTVO. |
| OCTETS | • octets n. Plural of octet. • OCTET n. a composition for eight players, also OCTETT, OCTETTE. |
| OCTETT | • octett n. (Rare) Alternative spelling of octet. • OCTETT n. a composition for eight players, also OCTET, OCTETTE. |
| OCTOPI | • octopi n. (Nonstandard) plural of octopus. • OCTOPUS n. (Greek) a nocturnal eight-armed mollusk. |
| OCTROI | • octroi n. (Historical) A privilege granted by the sovereign authority, such as the exclusive right of trade granted… • octroi n. (Historical) A tax levied in money or kind at the gate of a French city on articles brought within the walls. • OCTROI n. (French) a duty levied on certain goods entering a town, esp. in some European countries. |
| OCTUOR | • octuor n. (Music, archaic) An octet. • OCTUOR n. (French) an octet. |
| OCTYLS | • octyls n. Plural of octyl. • OCTYL n. a type of hydrocarbon radical. |