an experiment in which only the manipulated and responding variable are allowed to change and conditions are kept the same.
According to the Thesaurus there are none. However, the meaning of what can be the similar to define. E.g. what color is her hair or define her hair color.
Hair can be used for a DNA profile.
Define, did it.
Mousse provides body to the hair. It can be used to achieve volume for those with straight hair. It can also be used to define waves or curls on textured hair.
You cant get your hair naturally curly if you don't have naturally curly hair. However; if you do have naturally curly hair you can define your curls with a leave in conditioner.
Hair is considered direct evidence when it can be definitively linked to a specific individual through DNA analysis. This typically requires a root or follicle attached to the hair shaft for successful identification.
I think you are trying to define a beard.
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DNA
Root of the hair containing protoplasm
There is no definitive historical evidence to suggest that the Prophet Muhammad had long hair.
There is no scientific evidence to suggest that honey can lighten or whiten hair.