| ACOLOUTHOSES | • ACOLOUTHOS n. (historical) the head of the Varangian guard of the Byzantine emperors, also AKOLOUTHOS, AKOLUTHOS. |
| CHROMATOLOGY | • chromatology n. The scientific study of colour. • CHROMATOLOGY n. the science of colour. |
| ECHOLOCATION | • echolocation n. The use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar. • ECHOLOCATION n. determining the position of objects by means of supersonic vibrations echoed from them, as a bat does. |
| HOMOEOPATHIC | • homoeopathic adj. Alternative spelling of homeopathic. • homœopathic adj. Obsolete spelling of homeopathic. • HOMOEOPATHIC adj. related to homoeopathy, also HOMEOPATHIC. |
| HOMOEOSTATIC | • homoeostatic adj. Alternative spelling of homeostatic. • HOMOEOSTATIC adj. relating to homoeostasis. |
| MONOCHROMATE | • monochromate n. (Inorganic chemistry) A compound that has a single chromate anion per molecule or unit cell. • monochromate v. To monochromatize. • MONOCHROMATE n. a person who sees all colours as different shades of a single colour, also MONOCHROMAT. |
| MONOCHROMATS | • monochromats n. Plural of monochromat. • MONOCHROMAT n. a person who sees all colours as different shades of a single colour, also MONOCHROMATE. |
| MOTORCOACHES | • motorcoaches n. Plural of motorcoach. • motor-coaches n. Plural of motor-coach. • motor␣coaches n. Plural of motor coach. |
| PHOTOCATHODE | • photocathode n. (Physics) A cathode that emits electrons when exposed to light. • PHOTOCATHODE n. a cathode that emits electrons when exposed to radiant energy and esp. light. |
| PHOTOMOSAICS | • photomosaics n. Plural of photomosaic. • PHOTOMOSAIC n. an image composed of many smaller photographs. |
| PHOTOVOLTAIC | • photovoltaic adj. Producing a voltage when exposed to light. • photo-voltaic adj. Alternative spelling of photovoltaic. • PHOTOVOLTAIC adj. of, relating to, or utilizing the generation of a voltage when radiant energy falls on the boundary between dissimilar substances (as two different semiconductors). |
| SCOPTOPHOBIA | • SCOPTOPHOBIA n. fear of being looked at, also SCOPOPHOBIA. |
| THIOALCOHOLS | • thioalcohols n. Plural of thioalcohol. • THIOALCOHOL n. another name for a thiol. |
| THORACOSCOPE | • thoracoscope n. The instrument used in thoracoscopy. • THORACOSCOPE n. an instrument for viewing the thorax and chest wall. |
| THORACOSTOMY | • thoracostomy n. Incision into the chest wall, with maintenance of the opening for drainage. • THORACOSTOMY n. the construction of an artificial opening in the chest, usually to draw off fluid or release a buildup of air. |
| TOXICOPHOBIA | • toxicophobia n. A morbid fear of poisons or being poisoned. • TOXICOPHOBIA n. the morbid fear of poisoning, also TOXIPHOBIA. |