hygienic

形容词 hygienic:

1. tending to promote or preserve health
   同义词：hygienical

1. A severe, often gangrenous inflammation of the mouth or genitals, occurring usually after an infectious disease and found most often in children in poor hygienic or malnourished condition.
   走马疳，坏疽性口炎嘴或生殖器部分严重的经常为生疽性的发炎，通常在感染了传染病后发生，最常发病于卫生条件极差或营养状况不良的孩子

hy.gi.en.ic

adj.（形容词）
Of or relating to hygiene.
卫生学的：与卫生学有关的，或属于这一范畴的
Tending to promote or preserve health.
保健的：利于提高健康或保持健康的
Sanitary.
卫生的

【引伸】
hy.gien.ically
adv.（副词）