| EPHEMERAE | • EPHEMERA n. (Greek) an insect of the mayfly genus Ephemera, whose adult life is very short. |
| EPHEMERAL | • ephemeral n. Something which lasts for a short period of time. • ephemeral adj. Lasting for a short period of time. • ephemeral adj. (Biology) Existing for only one day, as with some flowers, insects, and diseases. |
| EPHEMERAS | • EPHEMERA n. (Greek) an insect of the mayfly genus Ephemera, whose adult life is very short. |
| EPIMERASE | • epimerase n. (Biochemistry) Any enzyme that catalyzes the stereochemical inversion of the configuration about an… • EPIMERASE n. an enzyme which catalyses inversion at an asymmetric carbon atom in a molecule containing more than one such atom. |
| PERMEABLE | • permeable adj. Absorbing or allowing the passage of fluids. • PERMEABLE adj. allowing a gas or liquid to pass through. |
| PERMEANCE | • permeance n. A measure of the degree to which a material allows a fluid to permeate it. • permeance n. (Physics) The reciprocal of reluctance in a magnetic circuit; the analogue of conductance in an electrical circuit. • PERMEANCE n. the property of allowing the passage of lines of magnetic flux. |
| PERMEASES | • permeases n. Plural of permease. • PERMEASE n. an enzyme which assists the passage of a substrate into a cell through the cell membrane. |
| PERMEATED | • permeated v. Simple past tense and past participle of permeate. • PERMEATE v. to spread through. |
| PERMEATES | • permeates v. Third-person singular simple present indicative form of permeate. • PERMEATE v. to spread through. |
| PETAMETER | • petameter n. (US) (metrology) An SI unit of length equal to 1015 meters; alternative spelling of petametre. • PETAMETER n. ten to the power of fifteen metres, also PETAMETRE. |
| PETAMETRE | • petametre n. Britain spelling of petameter. • PETAMETRE n. ten to the power of fifteen metres, also PETAMETER. |
| TEMPERATE | • temperate adj. Moderate; not excessive. • temperate adj. Moderate in the indulgence of the natural appetites or passions. • temperate adj. Proceeding from temperance. |