Definitions

from The Century Dictionary.

  • A combining form used in organic chemistry to indicate optical inactivity through internal compensation. See mesoform.

from the GNU version of the Collaborative International Dictionary of English.

  • A combining form denoting in the middle, intermediate.
  • (Chem.) Denoting a type of hydrocarbons which are regarded as methenyl derivatives. Also used adjectively.
  • (Chem.) Optically inactive due to compensating optical activity at two or more asymmetric centers, often due to a plane of symmetry within the molecular structure.
  • Attached to a carbon atom located between two hereoatoms in a heterocyclic ring.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • prefix middle
  • prefix intermediate
  • prefix chemistry Designating an achiral member of a group of diastereoisomers that has at least one chiral member

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek μέσος (mésos, "middle").

Examples

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