equivalence
UK[ɪˈkwɪvələns]US[ɪˈkwɪvələns]
n
The state of being equal or equivalent in value, function, or meaning.
n
A logical relationship between two statements such that if one is true, the other must also be true, and if one is false, the other must also be false.
Morpheme Breakdown
equi
val
ence
equi
equal
val
value
ence
noun suffix
Etymology
The word "equivalence" is a logical construction from Latin elements, entering English via French in the mid-15th century. Its core components, aequus (equal) and valere (to be worth), combine to form the literal concept of "equal worth." The suffix -entia then transforms this concept into an abstract noun denoting the state or condition. Thus, the term's journey from the concrete ideas of balanced scales and inherent value to its modern abstract and logical meanings perfectly illustrates the precision of scientific and philosophical vocabulary built upon classical foundations.
Analysis
Structure: equi (equal) + val (value) + ence (noun suffix)
- equi: From Latin aequus (equal, level). A prefix meaning "equal" or "equally."
- val: From Latin valere (to be strong, to be worth). A root denoting "value" or "worth."
- ence: From Latin -entia, a noun-forming suffix indicating a state, quality, or condition.
Examples
There is a functional equivalence between these two software tools.
In logic, material equivalence is a type of conditional relationship.
The treaty established an equivalence of qualifications between the two countries.