From OED
pleonasm (_____________). Formerly in Lat. form pleo_nasmus.
[ad. L. pleonasmus (Mart.), a. Gr. __________, f. __________ to be superfluous or redundant, also in Gram. to add superfluously, f. _____ more, compar. of ____ much. Cf. F. pléonasme (1613).]
1. Gram. and Rhet. The use of more words in a sentence than are necessary to express the meaning; redundancy of expression (either as a fault of style, or as a figure purposely used for special force or clearness); with a and pl., an instance of this, or the superfluous word or phrase itself.
1586 A. Day Eng. Secretary ii. (1625) 82 Pleonasmus, where, with words seeming superfluous, we doe increase our reasons, as thus, With these eares I heard him speake it.
1589 Puttenham Eng. Poesie iii. xxii. (Arb.) 264 The first surplusage the Greekes call Pleonasmus, I call him (too full speech) and is no great fault.
1610 Healey St. Aug. Citie of God (1620) 15 Some thinke the preposition ___ to be here a Pleonasme_and that ______ and _________ is all one.
1621 Burton Anat. Mel. Democr. to Rdr. 12, I require a favourable censure of all faults omitted, harsh compositions, pleonasms of words, tautological repetitions, &c.
1681 R. Wittie Surv. Heavens 28, I take it to be a Pleonasm, a Figure frequently used in Scripture.
1741 Warburton Div. Legat. II. 556 The genius of the Hebrew tongue, which so much delights in pleonasms.
1860 Gen. P. Thompson Audi Alt. III. cxiv. 45 What the energetic pleonasm of our ancestors denominated _a false lie'.
_ b. Gram. The addition of a superfluous (or apparently superfluous) letter or syllable to a word. Obs. rare.
1678 Phillips (ed. 4), Pleonasm, in Grammar it is the adding of a Letter or Syllable, either to the beginning of a word, and is then called Prosthesis, or to the middle, and is then called Epenthesis, or to the end, and is then called Paragoge.
1763 Swinton in Phil. Trans. LIV. 1