Longman Dictionary of

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lexicon n
see also LEXICAL ENTRY
lexical corpus n
a collection of words for purposes of language analysis. Many lexical corpora
contain millions of words that can be analyzed by a computer.
see also CORPUS
lexical decision task n
see PRIMING
lexical field
lexical density n
also Type-Token Ratio, concept load
a measure of the ratio of different words to the total number of words in
a text, sometimes used as a measure of the difficulty of a passage or text.
Lexical density is normally expressed as a percentage and is calculated by
the formula:
number of separate words
Lexical density
100
total number of words in the text
For example, the lexical density of this definition is:
29 separate words
100 50.88
57 total words
see also TYPE
lexical entry n
a term used in TRANSFORMATIONAL GENERATIVE GRAMMAR for a word or
phrase listed in the lexicon (see LEXICON 3 ) of the grammar.
The information given in a lexical entry usually includes:
a its pronunciation (see DISTINCTIVE FEATURE)
b its meaning, which may be given in a formalized way, e.g. (+human)
(+male) (see SEMANTIC FEATURES)
c its LEXICAL CATEGORY, e.g. n(oun), v(erb), a(djective)
d other linguistic items it may co-occur with in a sentence, e.g. whether
or not a verb can be followed by an object (see OBJECT 1 )
In later models of TG Grammar, a lexical entry would also contain
semantic roles such as agent, patient and goal which can be assigned to
noun phrases in the sentence (see q-THEORY).
see also PROJECTION PRINCIPLE
lexical field n
also semantic field
the organization of related words and expressions (see LEXEME) into a
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