Definition of Cycadales
: an order of gymnospermous plants abundant in the Mesozoic but now reduced to a few localized and widely scattered tropical forms that have an unbranched trunk which is tall and arborescent or squat and tuberous with a large pith and starchy cortex and that bears a terminal crown of long pinnate leaves together with one or more very large cones — see cycadaceae
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of cycadales
New Latin, from Cycad-, Cycas + -ales
Seen and Heard
What made you want to look up Cycadales? Please tell us where you read or heard it (including the quote, if possible).