non-atomic
/ˌnɒnəˈtɒmɪk/adjective
1Not involving atoms; not composed of atoms, structurally continuous.
2 Logic. Of a proposition: containing a logical constant.
3 Mathematics and Computing. Not simple but compound; composed conceptually of smaller units; (specifically in measure theory) designating a metric space, or a measure defined on such a space, in which every measurable set having non-zero measure contains a measurable subset having a smaller non-zero measure.
Origin
Mid 19th century; earliest use found in Andrew Ure (1778–1857), chemist. From non- + atomic.