Phrase-structure grammar
[freyz-struhk-cher] /ˈfreɪzˌstrʌk tʃər/
noun, Linguistics.
1.
a grammar that consists of phrase-structure rules.
noun
1.
a grammar in which relations among the words and morphemes of a sentence are described, but not deeper or semantic relations PSG Compare transformational grammar
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- Phrase-structure rule
noun, Linguistics. 1. a rule that generates a sentence or other syntactic construction from words and phrases and identifies its constituent structure. noun 1. (generative grammar) a rule of the form A → X where A is a syntactic category label, such as noun phrase or sentence, and X is a sequence of such labels […]
- Phrase-structure-tree
noun 1. Linguistics. a structural representation of a sentence in the form of an inverted tree, with each node of the tree labeled according to the phrasal constituent it represents.
- Photoreceptor cell
photoreceptor cell n.
- Photorecon
[foh-toh-ri-kon] /ˌfoʊ toʊ rɪˈkɒn/ noun, adjective, Informal. 1. .
- Photoreceptor
[foh-toh-ri-sep-ter] /ˌfoʊ toʊ rɪˈsɛp tər/ noun, Physiology, Biology. 1. a stimulated by light. /ˌfəʊtəʊrɪˈsɛptə/ noun 1. (zoology, physiol) a light-sensitive cell or organ that conveys impulses through the sensory neuron connected to it photoreceptor pho·to·re·cep·tor (fō’tō-rĭ-sěp’tər) n. A nerve ending, cell, or group of cells specialized to sense or receive light. photoreceptor (fō’tō-rĭ-sěp’tər)