diph·thong·ize 
(dĭfthông-īz′, -thŏng-, dĭp-)
(dĭfthông-īz′, -thŏng-, dĭp-)tr. & intr.v. diph·thong·ized, diph·thong·iz·ing, diph·thong·iz·es
To pronounce as or become a diphthong.
diph′thong·i·zation (-ĭ-zāshən) n.
- automatic pilot
- automatic teller machine
- automatic writing
- automation
- automatism
- automatist
- automative
- automatization
- automatize
- automaton
- automatous
- automobile
- automobilist
- automotive
- autonomic
- autonomically
- autonomic nervous system
- autonomist
- autonomous
- autonomously
- autonomy
- autonym
- autopen
- autophagy
- autopilot