or.tho.don.tics
n.(名词)(used with a sing. verb)The dental specialty and practice of preventing and correcting irregularities of the teeth, as by the use of braces.(与单数动词连用)正牙学,畸齿校正术:牙科保护和校正不规则形状的牙齿的特殊技术和实践,如通过支架等
【引伸】
or.thodon.tic
adj.(形容词)or.thodon.tically
adv.(副词)or.thodon.tist
n.(名词)