Of, relating to, or inhabiting mountains, especially above the timberline. / (skiing) Of or relating to slalom and downhill skiing.

(botany) An w:alpine plant, any of several plants, native to mountain habitats, often grown in a rock garden.

(linguistics) The Glagolitic writing system, the oldest known Slavonic alphabet.

A secondary structure found in many proteins, in which the amino acids are arranged in a coil, or helix, with almost no free space on the inside and all side chains being pointed towards the outside

(US, Canada) To arrange words or items in order of the first (and then subsequent) letters as they occur in the alphabet.

The ICAO radiotelephony spelling alphabet of the International Civil Aviation Organization. This alphabet assigns names to letters of the alphabet for clearer enunciation (and for the same reason pronounces the numeral 9 as "niner"):

(physics) A positively charged nucleus of a helium-4 atom (consisting of two protons and two neutrons), emitted as a consequence of radioactivity; α-particle

A writing system used to unambiguously transcribe the sounds of human speech.

Consisting of, or limited to, letters and/or numbers, especially the characters A to Z (lowercase and uppercase) and 0 to 9.

An alphanumeric character.