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Polycyclic may refer to: * Polycyclic compound, a cyclic compound with more than one hydrocarbon loop or ring structures, including: **
Polycyclic musks Synthetic musks are a class of synthetic aroma compounds to emulate the scent of deer musk and other animal musks (castoreum and civet). Synthetic musks have a clean, smooth and sweet scent lacking the fecal notes of animal musks. They are used as ...
** Polycyclic aromatic hydrocarbon ***
Chlorinated polycyclic aromatic hydrocarbon Chlorinated polycyclic aromatic hydrocarbons (Cl-PAHs) are a group of compounds comprising polycyclic aromatic hydrocarbons with two or more aromatic rings and one or more chlorine atoms attached to the ring system. Cl-PAHs can be divided into two g ...
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Contorted polycyclic aromatic hydrocarbon Contorted aromatics or more precisely contorted polycyclic aromatic hydrocarbons are polycyclic aromatic hydrocarbons (PAHs) in which the fused aromatic molecules deviate from the usual Plane (geometry), planarity. Introduction The comparison ...
* Polycyclic group, in mathematics, a solvable group that satisfies the maximal condition on subgroups *
Polycyclic spawning Reproduction (or procreation or breeding) is the biological process by which new individual organisms – "offspring" – are produced from their "parent" or parents. Reproduction is a fundamental feature of all known life; each individual org ...
, when an animal reproduces multiple times during its lifespan {{disambig