per·i·o·don·tia 
(pĕr′ē-ə-dŏnshə)
(pĕr′ē-ə-dŏnshə)n.
Periodontics.
- identically
- identical rhyme
- identifiable
- identifiably
- identification
- identification card
- identifier
- identify
- identity
- identity crisis
- identity element
- identity function
- identity matrix
- identity politics
- identity sign
- identity theft
- ideo-
- ideogram
- ideogrammatic
- ideogrammatically
- ideograph
- ideographic
- ideographically
- ideography
- ideologic