相对湿度 xiāngduìshīdù relative humidity Origin Definitions Defs Strokes Stroke Words Sentences Sents 相对 相對 xiāngduì adverbadjective relative Existing or changing in relation to something else; relatively; comparatively; not absolute湿度 濕度 shīdù noun humidity amount of moisture contained in a substance; specifically the amount of water vapor in the air