Dictionary.com

synapsid

[ sĭ-năp′sĭd ]

Any of various amniotes with one temporal opening on each side of the skull. Synapsids emerged in the late Permian Period and were characterized by carrying their limbs under their body and developing front teeth that were different from their back teeth. One group of synapsids, the therapsids, gave rise to the mammals. Compare anapsid diapsid therapsid.

QUIZZES

BECOME A PRO CHEF WITH THIS EXQUISITE CUISINE QUIZ!

Even if you can't be a professional chef, you can at least talk like one with this vocabulary quiz.
Question 1 of 9
You may have read the word "simmer" in a recipe or two, but what does it really mean?
To cook in water that begins cold and then reaches a boil.
To stew in a sauce for a long time.
To cook in water, just below boiling temperature.
TAKE THE QUIZ TO FIND OUT

Words nearby synapsid

synagogue, synalepha, synalgia, synaloepha, synapse, synapsid, synapsis, synapte, synaptic, synaptic cleft, synaptic conduction
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Example sentences from the Web for synapsid

  • A few years ago a Permian bed in Russia yielded a most interesting series of remains of Synapsid reptiles.

    The Story of Evolution|Joseph McCabe

  • Their remains fall into two great groups, which are known as the Diapsid and the Synapsid reptiles.

    The Story of Evolution|Joseph McCabe