Helm·holtz 
(hĕlmhōlts′), Hermann Ludwig Ferdinand von 1821-1894.
(hĕlmhōlts′), Hermann Ludwig Ferdinand von 1821-1894. German physicist and physiologist who formulated the law of the conservation of energy (1847) and invented an ophthalmoscope (1851).
- interlibrary
- interline
- interline
- interlinear
- interlineation
- Interlingua
- interlingual
- interlingually
- interlining
- interlink
- interlock
- interlocution
- interlocutor
- interlocutory
- interlope
- interloper
- interlude
- interlunar
- intermarriage
- intermarry
- intermeddle
- intermeddler
- intermediacy
- intermediary
- intermediate