| BATHOMETER | • bathometer n. An instrument that measures the depth of water, used especially to measure the depth of ocean water. • BATHOMETER n. an instrument for measuring depths, esp. one for taking soundings without a sounding line. |
| BATHYMETER | • bathymeter n. Alternative form of bathometer. • BATHYMETER n. an instrument for recording the contours of deep oceans. |
| ECTOTHERMS | • ectotherms n. Plural of ectotherm. • ECTOTHERM n. a cold-blooded animal. |
| FATHOMETER | • fathometer n. (Nautical) A depth finder that uses sound waves to determine the depth of water. • FATHOMETER n. an instrument for measuring underwater depth using sound. |
| HECTOMETER | • hectometer n. US spelling of hectometre. • HECTOMETER n. a measure of length, equal to a hundred meters, also HECTOMETRE. |
| HECTOMETRE | • hectometre n. (Metrology) An SI unit of length equal to 102 metres. Symbol: hm. • HECTOMETRE n. a measure of length, equal to a hundred meters, also HECTOMETER. |
| HEPTAMETER | • heptameter n. A line or verse containing seven metrical feet. • HEPTAMETER n. a verse line of seven feet. |
| HERMETISTS | • hermetists n. Plural of hermetist. • HERMETIST n. an adherent of hermetism, a system of ideas based on hermetic teachings. |
| HETEROATOM | • heteroatom n. (Chemistry) Any atom which is not carbon or hydrogen. • heteroatom n. (Chemistry) Any atom in a heterocyclic ring (or other structure normally built of carbon atoms) that… • HETEROATOM n. an atom other than carbon in the ring of a heterocyclic compound. |
| HYETOMETER | • hyetometer n. Rain gauge. • HYETOMETER n. an instrument for measuring rainfall. |
| METATHEORY | • metatheory n. A theory about a theory. • metatheory n. Examination of the theory or theories relating to a certain field of study or endeavour. • METATHEORY n. philosophical discussion of the foundations, structure, or results of some theory, such as metamathematics. |
| MOTHERIEST | • MOTHERY adj. consisting of, containing, or resembling, mother (in vinegar). |
| NETHERMOST | • nethermost adj. (Archaic, chiefly literary) Farthest down; lowest. • NETHERMOST adj. lowest. |
| PHOTOMETER | • photometer n. (Physics) Any of several instruments used to measure various aspects of the intensity of light. • photometer v. (Astronomy) To measure some aspect of light (from a star) using a photometer. • PHOTOMETER n. an instrument for measuring light intensity. |
| STENOTHERM | • stenotherm n. (Biology) An organism, often specifically an ectotherm, that functions only within a narrow temperature range. • STENOTHERM n. an organism capable of surviving over only a narrow range of temperatures. |
| STEPMOTHER | • stepmother n. The wife of one’s biological father, other than one’s biological mother. • stepmother n. (Botany, rare) A viola, especially Viola tricolor, heartsease. • step-mother n. Alternative form of stepmother. |
| TACHOMETER | • tachometer n. A device for measuring the revolutions per minute (RPMs) of a revolving shaft, as with the driveshaft… • tachometer n. A device for measuring or indicating velocity or speed, as of blood, a river, a machine, etc. • TACHOMETER n. an instrument for measuring speed of rotation. |
| TACHYMETER | • tachymeter n. A surveying instrument for quickly finding distances. • tachymeter n. A speed indicator; a tachometer. • TACHYMETER n. a surveying instrument for rapid measurements of distances, elevations, and bearings. |
| THERMETTES | • thermettes n. Plural of thermette. • THERMETTE n. (tradename) a device, used outdoors, for boiling water rapidly. |
| THERMOSETS | • thermosets n. Plural of thermoset. • THERMOSET v. of resin or plastic, to set permanently after melting and moulding. |