Search and compare thousands of words and phrases in British Sign Language (BSL). The largest collection online.
How to sign: a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena
"theories can incorporate facts and laws and tested hypothes;
Within this category: atomism, blastogenesis, economic theory, field theory, holism, preformation, reductionism, scientific theory, structuralism, structuralism