Ant-lion :: Ant-lion (n.) A neuropterous insect, the larva of which makes in the sand a pitfall to capture ants, etc. The common American species is Myrmeleon obsoletus, the European is M. formicarius..
Anthelion :: Anthelion (n.) A halo opposite the sun, consisting of a colored ring or rings around the shadow of the spectator's own head, as projected on a cloud or on an opposite fog bank..
Aphelion :: Aphelion (n.) That point of a planet's or comet's orbit which is most distant from the sun, the opposite point being the perihelion..
Apheliotropic :: Apheliotropic (a.) Turning away from the sun; -- said of leaves, etc..
Apheliotropism :: Apheliotropism (n.) The habit of bending from the sunlight; -- said of certain plants.
Aphis Lion :: Aphis lion () The larva of the lacewinged flies (Chrysopa), which feeds voraciously upon aphids. The name is also applied to the larvae of the ladybugs (Coccinella)..