| ATMOSPHERES | • atmospheres n. Plural of atmosphere. • ATMOSPHERE n. the body of air and gas which surrounds the earth. |
| HAEMOPTYSES | • haemoptyses n. Plural of haemoptysis. • hæmoptyses n. Plural of hæmoptysis. • HAEMOPTYSIS n. the spitting or coughing up of blood from the lungs. |
| HAEMOPTYSIS | • haemoptysis n. (British spelling) Alternative spelling of hemoptysis. • hæmoptysis n. Obsolete form of hemoptysis. • HAEMOPTYSIS n. the spitting or coughing up of blood from the lungs. |
| HYPSOMETERS | • hypsometers n. Plural of hypsometer. • HYPSOMETER n. an instrument for measuring height of trees through triangulation. |
| IMPOSTHUMES | • imposthumes n. Plural of imposthume. • imposthumes v. Third-person singular simple present indicative form of imposthume. • IMPOSTHUME n. (archaic) an abscess, also IMPOSTUME. |
| MENTORSHIPS | • mentorships n. Plural of mentorship. • MENTORSHIP n. the office of mentor. |
| MYTHOPOESES | • mythopoeses n. Plural of mythopoesis. • MYTHOPOESIS n. the making of myths. |
| MYTHOPOESIS | • mythopoesis n. Creation of myth. • MYTHOPOESIS n. the making of myths. |
| OPSIMATHIES | • OPSIMATHY n. education late in life. |
| PHOTOSYSTEM | • photosystem n. (Biochemistry) Either of two biochemical systems, active in chloroplasts, that are part of photosynthesis. • PHOTOSYSTEM n. either of two photochemical reaction centers consisting chiefly of photosynthetic pigments complexed with protein and occurring in chloroplasts. |
| POLISHMENTS | • polishments n. Plural of polishment. • POLISHMENT n. the act of polishing, or the state of being polished. |
| POLYTHEISMS | • polytheisms n. Plural of polytheism. • POLYTHEISM n. belief in multiple deities. |
| PROPHETISMS | • prophetisms n. Plural of prophetism. • PROPHETISM n. the actions of a prophet or prophets. |
| SMARTPHONES | • smartphones n. Plural of smartphone. • smart␣phones n. Plural of smart phone. • SMARTPHONE n. a portable device combining a mobile phone and a computer. |
| SMOOTHPATES | • SMOOTHPATE n. (archaic) a bald person. |
| SPELEOTHEMS | • speleothems n. Plural of speleothem. • SPELEOTHEM n. a term for depositional features, such as stalactites and stalagmites, found in caves, also SPELAEOTHEM. |
| STEPMOTHERS | • stepmothers n. Plural of stepmother. • step-mothers n. Plural of step-mother. • STEPMOTHER n. the wife of one's father when distinct from one's natural or legal mother. |
| SUPERSMOOTH | • supersmooth adj. Very smooth. • supersmooth adj. (Mathematics) Of or relating to a distribution that has derivatives of all orders. • SUPERSMOOTH adj. very very smooth. |
| THEOSOPHISM | • theosophism n. Belief in theosophy. • THEOSOPHISM n. theosophical tenets. |