(phonology) A dissimilatory phonological process in Ancient Greek and Sanskrit, according to which an aspirated consonant loses its aspiration if it is followed by another aspirated consonant in the next syllable.

(linguistics) One of the basic principles describing the position of words and phrases in a sentence, stating that a shorter phrase will precede a longer phrase where possible.

(phonology) A Proto-Indo-European phonological rule that governs the word-final sequences of a vowel, followed firstly by a semivowel or a laryngeal and then by a nasal. Such sequences are simplified so that laryngeals and semivowels are dropped, with compensatory lengthening of a preceding vowel.

(computing) The rule of thumb that there should be at least one CPU for each user of a system.

A law stating that objects that generate retinal images of the same size will look different in physical size (linear size) if they appear to be located at different distances.

Synonym of law binding

(trigonometry) A statement about the relationship between the tangents of two angles of a triangle and the lengths of the opposing sides.

(software engineering) The design principle that software should be conservative as to its own behaviour (i.e. strictly compliant with specifications) but liberal in the behaviour it tolerates from other systems.

The rule that the best video games are easy to learn but difficult to master.

(phonology) A sound change and a synchronic phonological rule that operated during an early stage of the Proto-Indo-European language. The rule deleted coda fricatives *s or laryngeals *h₁, *h₂ or *h₃ (cover symbol *H), with compensatory lengthening occurring in a word-final position.