a. Expressed or expressible as a quantity.
b. Of, relating to, or susceptible of measurement.
c. Of or relating to number or quantity.
2. Of or relating to a metrical system based on the duration of syllables rather than on stress. Used especially of classical Greek and Latin verse.
[Medieval Latin quantitātīvus, from Latin quantitās, quantitāt-, quantity, from quantus, how great; see QUANTITY.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.