[pip-uh-reen, -er-in] /ˈpɪp əˌrin, -ər ɪn/
a white, crystalline alkaloid, C 1 7 H 1 9 NO 3 , obtained from pepper and other piperaceous plants and also prepared synthetically: used as an insecticide.
a crystalline insoluble alkaloid that is the active ingredient of pepper, used as a flavouring and as an insecticide. Formula: C17H19NO3
[pi-per-i-deen, -din, pahy-, pip-er-i-] /pɪˈpɛr ɪˌdin, -dɪn, paɪ-, ˈpɪp ər ɪ-/ noun, Chemistry. 1. a colorless, water-soluble liquid, C 5 H 1 1 N, obtained from the alkaloid piperine or from pyridine: used chiefly as a solvent. /pɪˈpɛrɪˌdiːn; -dɪn/ noun 1. a colourless liquid heterocyclic compound with a peppery ammoniacal odour: used in making rubbers […]
- Piperocaine hydrochloride
piperocaine hydrochloride pi·per·o·caine hydrochloride (pī’pə-rō-kān’, pĭp’ə-, pī-pěr’ə-kān’) n. A rapidly acting local anesthetic for infiltration and spinal anesthesia.
- Pipe roll
noun 1. (history) an annual record of the accounts of a sheriff or other minister of the crown kept at the British Exchequer from the 12th to the 19th centuries Also called the Great Roll of the Exchequer
[pi-per-uh-nal, pahy-, pip-er-uh-] /pɪˈpɛr əˌnæl, paɪ-, ˈpɪp ər ə-/ noun, Chemistry. 1. a white, crystalline, water-insoluble aldehyde, C 8 H 6 O 3 , which darkens on exposure to light: used chiefly in perfumery and organic synthesis. /ˈpɪpərəʊˌnæl/ noun 1. a white fragrant aldehyde used in flavourings, perfumery, and suntan lotions. Formula: C8H6O3 Also called […]