| CHEMOSPHERE | • chemosphere n. The region of the Earth’s atmosphere (from 20 to 120 miles above the surface) in which photochemical… • CHEMOSPHERE n. the thermosphere, the outermost layer of the atmosphere. |
| HECTOMETERS | • hectometers n. Plural of hectometer. • HECTOMETER n. a measure of length, equal to a hundred meters, also HECTOMETRE. |
| HECTOMETRES | • hectometres n. Plural of hectometre. • HECTOMETRE n. a measure of length, equal to a hundred meters, also HECTOMETER. |
| HELIOMETERS | • heliometers n. Plural of heliometer. • HELIOMETER n. instrument for measuring apparent diameter of the sun. |
| HETEROECISM | • heteroecism n. Quality of being heteroecious. • heterœcism n. (Mycology) Development of different stages of the same growth on different host‐plants; production of… • HETEROECISM n. a form of parasitism that requires two (usually unrelated) host species to complete its life-cycle. |
| HEXAEMERONS | • HEXAEMERON n. the (biblical) six days of creation, also HEXAHEMERON. |
| HEXAHEMERON | • hexahemeron n. A term of six days, especially the hexameron, or six days of the biblical creation. • HEXAHEMERON n. the (biblical) six days of creation, also HEXAEMERON. |
| HOMEOMERIES | • HOMEOMERY n. the state of being homoeomeric, having all the somites alike, also HOMOEOMERY. |
| HOMESTEADER | • homesteader n. A pioneer who goes and settles on a homestead. • HOMESTEADER n. one who occupies a homestead. |
| HYETOMETERS | • hyetometers n. Plural of hyetometer. • HYETOMETER n. an instrument for measuring rainfall. |
| MESOSPHERES | • mesospheres n. Plural of mesosphere. • MESOSPHERE n. a zone in the Earth between 400 and 670 km below the surface separating the upper mantle from the lower mantle. |
| NETHERMORES | • NETHERMORE n. the weaker or inferior party. |
| OVERWHELMED | • overwhelmed v. Simple past tense and past participle of overwhelm. • OVERWHELM v. to crush with something strong or heavy. |
| RHEOMETRIES | • RHEOMETRY n. measurement with a rheometer, an instrument that measures current. |
| SPHEROMETER | • spherometer n. A device used to measure the curvature of a surface, such as a lens. • SPHEROMETER n. an instrument for measuring curvature. |
| TACHEOMETER | • tacheometer n. Alternative spelling of tachymeter. • TACHEOMETER n. an instrument for rapidly measuring survey points on a map. |
| THERMOMETER | • thermometer n. An apparatus used to measure temperature. • THERMOMETER n. an instrument for determining temperature. |