【医】 olefinic acid
【机】 camphene; fenchenes; menthene
a group of things with common features; clan; family; race; strain
【化】 alkaline earths; family; group; odd series; periodic family; sub-group
subgroup
【医】 group; race; series; tribe
acerbity; ache; acid; grieved; pedantic; sour; tartness
【化】 acid
【医】 acidum