tinea ped·is (p?d??s)n. See athlete’s foot.[New Latin : Medieval Latin tinea, tinea + Latin pedis, genitive of p?s, foot.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.