: consisting of one atomespecially: having but one atom in the molecule
Examples of monatomic in a Sentence
Recent Examples on the WebIn particular, both diatomic hydrogen and monatomic helium can permeate the seals.
Peter Bright, Ars Technica, 31 Oct. 2018
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'monatomic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.