|monatomic or monoatomic (ˌmɒnəˈtɒmɪk, ˌmɒnəʊəˈtɒmɪk)|
|1.||(of an element) having or consisting of single atoms: argon is a monatomic gas|
|2.||(of a compound or molecule) having only one atom or group that can be replaced in a chemical reaction|
|3.||a less common word for monovalent|
|monoatomic or monoatomic|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|a chattering or flighty, light-headed person.|
monatomic mon·a·tom·ic (mŏn'ə-tŏm'ĭk)
Occurring as single atoms.
Having one replaceable atom or radical.