-patriccomb. form

Primary stress is attracted to the first syllable of this combining form and vowels may be reduced accordingly; see e.g. 
parapatric adj.Origin: Either (i) a borrowing from Greek, combined with an English element. Or (ii) a borrowing from Latin, combined with an English element. Etymons: Greek πάτρα  ; Latin patria  -ic suffix.
Etymology: Either  <  ancient Greek πάτρα homeland ( <  πατρ-  , πατήρ   (see father n.) + -α  , suffix forming nouns, e.g. names of countries and occasionally collective nouns), or  <  classical Latin patria patria n.   + -ic suffix. Compare ancient Greek πατρικός   relating to the father, paternal, inherited. Compare -patry comb. form.Apparently earliest in sympatric adj.   (early 20th cent.).
This is a new entry (OED Third Edition, June 2005; most recently modified version published online December 2019).