SYNTAX: a notion introduced in Aronoff (1976) which says that words with some idiosyncratic aspect are stored in the lexicon,
which means that they fill a particular slot. Semantic drift is one of the reasons why words are listed.
EXAMPLE: the English word transmission has the regularly determined
meaning 'act of transmitting', but next to this it is used as a technical term
(transmission of a car). On its idiosyncratic reading the word
transmission is listed.