pep·tone 
(pĕptōn′)
(pĕptōn′)n.
Any of various water-soluble protein derivatives formed by partial hydrolysis or digestion of proteins by an acid or enzyme, used in culture media in bacteriology.
[German Pepton, from Greek peptos, digested, from peptein, to digest; see pekw- in the Appendix of Indo-European roots.]
pep·tonic (-tŏnĭk) adj.
- interception
- interceptive
- interceptor
- intercession
- intercessional
- intercessor
- intercessory
- interchange
- interchangeability
- interchangeable
- interchangeableness
- interchangeably
- interchanger
- intercity
- interclavicle
- interclavicular
- intercoastal
- intercollegiate
- intercolumniation
- intercom
- intercommunal
- intercommunicate
- intercommunication
- intercommunicative
- intercommunion