'Appearance' in the Bible

On the seventh day the priest shall look at the infection, and if the scale has not spread and no yellowish hair has grown in it, and the appearance of the scale is no deeper than the skin,

Then the priest shall look at him; and if the swelling of the infection is reddish-white on his bald head or on his bald forehead, like the appearance of leprosy in the skin of the body,

After the article with the mark has been washed, the priest shall again look, and if the mark has not changed its appearance, even though the mark has not spread, it is unclean; you shall burn it in the fire, whether an eating away has produced bareness on the top or on the front of it.