pneu·mon·ic (n-mŏnĭk, ny-)
1. Of, affecting, or relating to the lungs; pulmonary.
2. Relating to, affected by, or similar to pneumonia.
[New Latin pneumonicus, from Greek pneumonikos, of the lungs, from pneumōn, lung; see pleu- in the Appendix of Indo-European roots.]
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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.