VoIP 
(vē′ō′ī′pē, voip)
(vē′ō′ī′pē, voip)n.
A communications protocol for transmitting telephone calls over a computer network, especially the internet.
[V(oice) o(ver) IP.]
- hydrogenate
- hydrogen bomb
- hydrogen bond
- hydrogen bromide
- hydrogen chloride
- hydrogen cyanide
- hydrogen fluoride
- hydrogen iodide
- hydrogen ion
- hydrogenolysis
- hydrogenous
- hydrogen peroxide
- hydrogen sulfide
- hydrogeologic
- hydrogeological
- hydrogeologist
- hydrogeology
- hydrographer
- hydrographic
- hydrographically
- hydrography
- hydroid
- hydrokinetic
- hydrokinetical
- hydrokinetics