I appreciate the exploration Lenovo is making by seeking out non-traditional materials for their products. I do have a general question about the description,

I appreciate the exploration Lenovo is making by seeking out non-traditional materials for their products. I do have a general question about the description, “plant-based.” Am I mistaken or does the English language use the conjoint “-based” to express “mostly comprised of,” or does it mean “is partially comprised of?” I’d always considered it to mean the former but am open to being corrected.