Search and compare thousands of words and phrases in American Sign Language (ASL). The largest collection online.
How to sign: serving as an essential component
"a cardinal rule"; "the central cause of the problem"; "an example that was fundamental to the argument"; "computers are fundamental to modern industrial structure";
How to sign: having existed from the beginning; in an earliest or original stage or state
"aboriginal forests"; "primal eras before the appearance of life on earth"; "the forest primeval"; "primordial matter"; "primordial forms of life";