Fathometer
trademark
Fa·thom·e·ter fa-ˈt͟hä-mə-tər 
ˈfa-t͟hə-ˌmē-
ˈfa-t͟hə-ˌmē- —used for a sonic depth finder
- interpolation
- interpolations
- interpolative
- interpolator
- interpolators
- interpole
- interpolitical
- interpolymer
- interpolymerization
- interpolymerize
- interpone
- interponed
- interpones
- interponing
- interpopulation
- interpopulational
- interportal
- interposal
- interposals
- interpose
- interposed
- interposer
- interposers
- interposes
- interposing