noun
analogue
AN-uh-lawg/ˈænʌlˌɔɡ/
Something similar to another thing in structure or function.
The mechanical hand is an analogue of a human hand in form and function.

Etymology
The pieces express correspondence according to a ratio or proportion. This idea of proportional matching underlies the meaning of a counterpart with a comparable form or function.
In context
this is C 5 Me 5 minus the per methylated analogue of cyclopentadiene
More examples
- This ancient tool has a modern analogue in the workshop.
- The committee searches for a historical analogue to the crisis.
- Several natural analogues help explain the laboratory model.
Forms
analogue · analogues
Similar words
- counterpart
- Suggests a corresponding role rather than structural resemblance.
- equivalent
- More strongly implies equal function or value.