a·pi·cal (āpĭ-kəl, ăpĭ-)
1. Of, relating to, located at, or constituting an apex.
2. Linguistics Of, relating to, or articulated with the tip of the tongue, as (t), (d), and (s).
[From Latin apex, apic-, top.]
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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.