| ACROSPIRE | • acrospire n. (Botany) The sprout at the end of a seed when it begins to germinate. • acrospire v. To put forth the first sprout. • ACROSPIRE n. the first real shoot developing in a germinating grain seed. |
| AIRPOWERS | • airpowers n. Plural of airpower. • AIRPOWER n. military air strength. |
| AIRPROOFS | • airproofs v. Third-person singular simple present indicative form of airproof. • AIRPROOF v. to make impermeable to air. |
| AIRPROXES | • airproxes n. Plural of airprox. • AIRPROX n. a near collision between aircraft in flight. |
| APHORISER | • aphoriser n. An aphorist. • APHORISER n. one who makes aphorisms, also APHORIST, APHORIZER. |
| APRIORISM | • apriorism n. (Philosophy) The idea that some knowledge of the physical world can be derived logically from general principles. • a␣priorism n. Alternative form of apriorism. • APRIORISM n. an a priori principle. |
| APRIORIST | • apriorist n. (Philosophy) A believer in apriorism. • APRIORIST n. a person who believes in Kant's theory of a priori cognition. |
| ASPERSOIR | • aspersoir n. Aspergillum. • ASPERSOIR n. (French) a brushlike implement used to sprinkle holy water. |
| ASPIRATOR | • aspirator n. A pump which draws gas through a liquid. • aspirator n. A pump for removing gases or liquids. • aspirator n. A pooter (device for collecting insects). |
| POLARISER | • polariser n. Alternative spelling of polarizer. • POLARISER n. a device for polarising light, also POLARIZER. |
| PORTRAITS | • portraits n. Plural of portrait. • PORTRAIT v. to make a portrait of. |
| PRIORATES | • priorates n. Plural of priorate. • PRIORATE n. the state or office of a prior, also PRIORSHIP. |
| PROGERIAS | • progerias n. Plural of progeria. • PROGERIA n. a syndrome of children characterized by physical symptoms suggestive of premature senility. |
| RAINDROPS | • raindrops n. Plural of raindrop. • RAINDROP n. a drop of rain. |
| SPIROGRAM | • spirogram n. A graph of respiratory movement. • SPIROGRAM n. a record made by a spirograph, an instrument recording movements of breathing. |
| SPIROGYRA | • spirogyra n. Any of a group of freshwater, filamentous green algae, of the genus Spirogyra, having chloroplasts arranged… • SPIROGYRA n. any of various minute green filamentous freshwater algae constituting the genus Spirogyra. |
| VAPORISER | • vaporiser n. Alternative spelling of vaporizer. • VAPORISER n. something that vaporises, also VAPORIZER. |