ˌȯltə(r)ˈnāshən also ˌal- noun
( -s )
Etymology: Middle English alternacioun, from Late Latin alternation-, alternatio, from Latin alternatus + -ion-, -io -ion
1.
a. : the act or action of alternating or effecting alternate succession
intelligent alternation of crops
b. : alternating occurrence : succession
the alternation of day and night
2.
a. : a statement in logic of the form p v q, idiomatically rendered “ p or q ” and meaning “ p or q or both”
b. : the sentential connective v or or used in logic in the inclusive sense
c. : the truth-function or operation symbolized or signified in logic by or or v
3. : the occurrence of different allomorphs or allophones