| CONTRAPROPELLER | • CONTRAPROPELLER n. one of a pair of propellers rotating in opposite directions. |
| HYPERPHYSICALLY | • hyperphysically adv. In a hyperphysical manner. • HYPERPHYSICAL adv. supernatural. |
| MEGASPOROPHYLLS | • megasporophylls n. Plural of megasporophyll. • MEGASPOROPHYLL n. a specialised leaf bearing or subtending one or more megasporangia. |
| MONOPROPELLANTS | • monopropellants n. Plural of monopropellant. • MONOPROPELLANT n. a rocket propellant containing both the fuel and the oxidizer in a single substance. |
| PALAEOGRAPHICAL | • palaeographical adj. Of or pertaining to palaeography. • palæographical adj. Obsolete spelling of paleographical. • PALAEOGRAPHICAL adj. related to palaeography, the study of ancient writings, also PALEOGRAPHIC. |
| PARALLELEPIPEDA | • PARALLELEPIPEDA n. solid figures bounded by six parallelograms, opposite pairs being identical and parallel (plural of parallelipedon*, which has 16 letters). |
| PARALLELEPIPEDS | • parallelepipeds n. Plural of parallelepiped. • PARALLELEPIPED n. a solid figure with each face a parallelogram. |
| PARALLELOPIPEDA | • PARALLELOPIPEDA plural of parallelopipedon* (which has sixteen letters), a solid figure bounded by six parallelograms, opposite pairs being identical and parallel. |
| PARALLELOPIPEDS | • parallelopipeds n. Plural of parallelopiped. • PARALLELOPIPED n. a solid figure bounded by six parallelograms, opposite pairs being identical and parallel. |
| PERIPATETICALLY | • peripatetically adv. In a peripatetic manner. • PERIPATETICAL adv. walking about from place to place, itinerant, also PERIPATETIC. |
| PERPENDICULARLY | • perpendicularly adv. In a perpendicular manner. • PERPENDICULAR adv. at right angles to a line or plane. |
| PREPOSITIONALLY | • prepositionally adv. In a prepositional manner. • prepositionally adv. As a preposition. • PREPOSITIONAL adv. relating to a preposition. |
| PRESYNAPTICALLY | • presynaptically adv. In a presynaptic manner. • PRESYNAPTIC adv. relating to a neuron by which a nerve impulse is conveyed to a synapse. |
| PROPRIETORIALLY | • proprietorially adv. In a proprietorial manner; like an owner. • PROPRIETORIAL adv. relating to ownership. |
| SUPPLEMENTARILY | • supplementarily adv. In a supplementary way; additionally. • SUPPLEMENTARY adv. added or serving as a supplement. |