univalent
1. [ adjective ] (genetics) used of a chromosome that is not paired or united with its homologous chromosome during synapsis
Examples:

"a univalent chromosome"

Related terms: multivalent bivalent genetics valence
2. [ adjective ] (chemistry) having a valence of 1
Synonyms: monovalent
Related terms: polyvalent chemistry valence
Similar spelling:   univalve
  unfiled
  unvoluntary
  unveiled
  unvalued
  unfilled
  unbalance
  unveil
  unblended
  unbalanced
  unpalatably
  unpalatable
  unfaltering
  unable