Definition of polycyclic
: having more than one cyclic component; especially : having two or more rings in the molecule
Recent Examples of polycyclic from the Web
PAHs (polycyclic aromatic hydrocarbons), which form when meat is smoked, charred or cooked over an open flame, are also found in tobacco smoke.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'polycyclic'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of polycyclic
International Scientific Vocabulary
First Known Use: 1869See Words from the same year
Seen and Heard
What made you want to look up polycyclic? Please tell us where you read or heard it (including the quote, if possible).