(music) The trigon.

(electronics) A pair of transistors with the emitter of one connected to the base of the other and the collectors connected together, acting as a transistor with greater amplification.

plural of allenylsulfone

(climatology) Any of the three cyclic variations in the Earth's orbit around the Sun, respectively the obliquity of its axis, the precession of the equinoxes, and the eccentricity of its orbit.