dəˈdäksəˌlän, -_lən noun
Usage: capitalized
Etymology: New Latin, from Greek daid-, dais firebrand, pine wood (from daiein to kindle, burn up) + New Latin -xylon — more at teen
: a form genus of chiefly Paleozoic fossils based on a heterogeneous group of woods which are now known to belong to various families and which are all characterized by alternate pitting on tracheid walls