Liddell-Scott-Jones

πρόσθεσις (prosthesis) an addition ^G:N-F

πρόσθεσις-θεσις, εως

(Doric dialect ποτίθεσις [Refs 3rd c.BC+], ἡ, (προστίθημι) application, ναρθήκων [Refs 5th c.BC+]; of pessaries, [Refs]; of ladders, π. [κλίμακος] [Refs 5th c.BC+]; of the cupping-instrument, [Refs 4th c.BC+]; κόμης προσθέσεις the use of false hair, [Refs 1st c.BC+]

__2 attachment, ζῳδίων [Refs]; of leaf to stem, [Refs 4th c.BC+]
__II administration of food, nourishment, [Refs 5th c.BC+]
__III addition, διὰ τὴν π. τοῦ ἑτέρου τῷ ἑτέρῳ [πρόσθεσιςθεσιν 4th c.BC: Aristoteles Philosophus “de Generatione et Corruptione” 333b1, compare “Ph.” 245a27 ">Refs 5th c.BC+]; opposed to ἀφαίρεσις,[Refs 5th c.BC+]; so in arithmetical sense, ἀριθμεῖσθαι κατὰ π. [Refs 4th c.BC+]
__III.b increase, [Refs 2nd c.AD+]
__III.2 in the Logic of Aristotle, addition of marks (such as properties, accidents, and the like) to determine a general term, Int.[Refs]; ἀκρατὴς κατὰ πρόσθεσιςθεσιν with a difference, opposed to ἁπλῶς, [Refs 4th c.BC+]; ὁ ἐκ προσθέσεως λόγος, opposed to ὁ ἐξ ἀφαιρέσεως, [Refs]; hence ἐκ προσθέσεως, of mixed, opposed to ἐξ ἀφαιρέσεως, of pure sciences, [Refs]; ἡ ἐξ ἐλαττόνων [ἐπιστήμη], opposed to ἡ ἐκ π., of arithmetic opposed to geometry, [Refs]
__IV assignment, prouision, [Refs]
__V Grammars, addition of a letter or syllable (as ϝ in ϝ-ρῆξις, ἀ in ἄ-σταχυς), [Refs 1st c.BC+]
__VI π. τοῦ ἡλίου increase of the sun's heat, i.e. spring, [Refs]
__VII in Music, pause of two time-units, [Refs 3rd c.AD+]
__VIII (προστίθεμαι) assent, [Refs 2nd c.AD+]
__VIII.2 aid, succour, π. τοῦ θεοῦ [Refs 2nd c.AD+]