the parts v. the whole, the whole v. the parts..... synecdoche

for the first time I remebered enough of this word to google a misspelling and get it! i was reading about minds refering to heads, but oddly not to thoughts.....:

Britanica:

synecdoche
literature

figure of speech in which a part represents the whole, as in the expression “hired hands” for workmen or, less commonly, the whole represents a part, as in the use of the word “society” to mean high society. Closely related to metonymy—the replacement of a word by one closely related to the original—synecdoche is an important poetic device for creating vivid imagery. An example is Samuel Taylor Coleridge’s line in “The Rime of the Ancient Mariner,” “The western wave was all aflame,” in which “wave” substitutes for “sea.” See also metonymy.


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OED
synecdoche

[a. late L. synecdoche (in med.L. sinodoche, whence obs. F. synodoche), a. Gr. , f. lit. to take with something else, f. SYN-1 + to take, take up. Cf. F. synecdoche, -doque, It. sineddoche, Sp. siné(c)doque, Pg. synecdoche. The form sinecdochine represents the acc. synecdochen, , and synodoches is a new nom. formed upon it; cf. syncopis, -in, s.v. SYNCOPE.]

A figure by which a more comprehensive term is used for a less comprehensive or vice versâ; as whole for part or part for whole, genus for species or species for genus, etc. Formerly sometimes used loosely or vaguely, and not infrequently misexplained.

1388 Wyclif's Bible, Prol. xii. (1850) 47 Bi a figure clepid synodoches [v.r. synadochie], whanne a part is set for al, either al is set for oo part. 1432-50 tr. Higden (Rolls) IV. 263 Criste was seide to be in the..herte of therthe thre daies and iij. nyhtes by a figure callede sinodoches, after Seynte Austyn, sythe Criste reste not in his sepulcre but by xlti howres. 1483 CAXTON Gold. Leg., Resurr. (1892) 52 Jhesus was in the sepulcre iii dayes & iii nyghtes. But after saynt austyn the first day is taken by synecdoche, that is, that the last part of the day is taken [etc.]. 1548 R. HUTTEN Sum of Diuinitie Eijb, They imagyne a Sinecdoch to be in thys worde. Ibid. Fviijb, The subtyll cauillacyons, whereby they fayne Sinecdochine. 1551 T. WILSON Logike (1580) 75 Therefore, whereas I saie, the Churche doeth not erre, it is called Synechdoche, that is to saie, when the parte is vsed for the whole [sic]. 1602 MARSTON Ant. & Mel. v. Wks. 1856 I. 55, I did send for you to drawe me a devise, an Imprezza, by Sinecdoche a Mott. 1612 J. MASON Anat. Sorc. 56 By these two blessings (to wit) the sunne & raine meaning al other earthly benefits whatsoever, by the figure synechdoche. 1638 CHILLINGW. Relig. Prot. I. v. §94. 295 By a Synecdoche of the whole for the part, he might be said to forsake the Visible Church. 1657 J. SMITH Myst. Rhet. 44 Of the Grammarians it is called a Synecdoche, or Comprehension, when a common word or name is restrained to a part which is expressed by the Accusative Case..: as, Æthiops albus dentes, an Ethiopian white in the teeth; here, white agreeing to the teeth only, is attributed to the whole Ethiopian. 1660 JER. TAYLOR Worthy Commun. I. iii. 58 It is by a Metonymy and a Sacramental Manner of speaking, yet it is also a synecdoche of the part for the whole. 1718-31 J. TRAPP tr. Virg., Eclogues I. 87 note (ed. 2) I. 11 Aristas, by a Metonymy of the Adjunct, for Harvests; and Those by a Synecdoche, for Years. 1872 W. MINTO Engl. Prose Lit. Introd. 15 Metaphors, personifications, synecdoches and metonymy in almost every sentence. 1900 R. J. DRUMMOND Apost. Teach. viii, This ordinance was frequently by synecdoche spoken of as the Breaking of Bread.