asperitasA cloud formation characterized by wavy undulations in the cloud base.
asperityThe quality of having a rough or uneven surface; roughness, unevenness; (countable, chiefly in the plural) a protruding or rough area or point on a surface; a protrusion.
asperulateHaving a surface which is roughened by many small points or warts.
asperulosideA particular glycoside with similar properties to aucubin.
asperulousSlightly rough, due to minute small hard protrusions on the surface.
aspetArmenian hereditary title borne by the members of the Bagratuni (Bagratid) family.
asphaltA sticky, black to brown and highly viscous liquid or semi-solid, composed almost entirely of bitumen with small mineral particles, that is present in most crude petroleums and in some natural deposits.
asphaltanepolyaromatic compounds left from distillation of crude oil that are insoluble in pentane.
asphalteneAny of the dark organic constituents of crude oils and bitumen that are soluble in aromatic solvents but not in aliphatic ones; they are polycyclic aromatic compounds (composed of fused benzene rings) with aliphatic side chains
aspidinThe toxic compound 2-butanoyl-4-[(3-butanoyl-2,6-dihydroxy-4-methoxy-5-methylphenyl)methyl]-3,5-dihydroxy-6,6-dimethylcyclohexa-2,4-dien-1-one found in aspidium
aspidinolThe compound 1-(2,6-dihydroxy-4-methoxy-3-methylphenyl)butan-1-one found in the rhizome of the male fern
AspidiskeIota Carinae, a star in the constellation of Carina.
aspidistraAny of several Asian plants of the genus Aspidistra, having large leaves and small bell-shaped flowers; widely cultivated as a houseplant.
aspidistralRelating to, or abounding in, aspidistras.
aspidiumSynonym of dryopteris: a member of a certain genus of ferns, including the male fern.
aspidobranchAny member of the Aspidobranchia, a taxonomic order of sea snails.
aspidoceratidAny of the extinct ammonites in the family Aspidoceratidae.
aspidocheloneA fabled sea creature according to the tradition of the Physiologus and medieval bestiaries, variously described as a large whale or vast sea turtle, and a giant sea monster with huge spines on the ridge of its back. It is often mistaken for an island, enticing unwitting sailors and drowning them.
aspidosiphonidAny of the peanut worms in the family Aspidosiphonidae.
aspidosomaThe anterior dorsal section of the prosoma of a mite, separated from the podosoma by the abjugal furrow and separated dorsally from the opisthosoma by the disjugal furrow.
aspidospermineAn alkaloid, obtained from quebracho bark, that was once used as a respiratory stimulant and antispasmodic, and as an antipyretic in typhoid fever
aspidospondylousOf, pertaining to, or afflicted with aspidospondyly.
aspidospondylyThe condition of having the centra of the vertebra arranged in separate ossifications.
aspieAn Aspergerian: a person with Asperger’s syndrome.
aspirantSomeone who aspires (for high office, etc.)
aspirateThe puff of air accompanying the release of a plosive or fricative consonant.
aspiratedPronounced with an audible breath, a brief expulsion of air at the end of the sound.
aspirationThe act of aspiring or ardently desiring; an ardent wish or desire, chiefly after what is elevated or spiritual (with common adjunct adpositions being to and of).