hy·dro·phone 
(hīdrə-fōn′)
(hīdrə-fōn′)n.
An electrical instrument for detecting or monitoring sound under water.
- inarticulately
- inarticulateness
- inartistic
- inartistically
- inasmuch as
- in a/some measure
- in at/on the kill
- inattention
- inattentive
- inattentively
- inattentiveness
- in at the kill
- inaudibility
- inaudible
- inaudibly
- inaugural
- inaugurate
- inauguration
- inaugurator
- inauspicious
- inauspiciously
- inauspiciousness
- inauthentic
- inauthenticity
- in a way