Dictionary Definition:
Api (indecl.) [Sk. api & pi; Idg. *epi *pi *opi; cp. Gr. e)/pi on to, o)/pi (o)/piqen behind, o)pi/ssa back = close at one's heels); Lat. ob. in certain functions; Goth. iftuma. <-> The assimil. form before vowels is app˚ (= Sk. apy˚). See further details under pi.] both prep. & conj., orig. meaning "close by", then as prep. "towards, to, on to, on" and as adv. "later, and, moreover". -- 1 (prep. & pref.) (a) prep. c. loc.: api ratte later on in the night (q. v.) -- (b) pref.: apidhāna putting on to; apiḷahati bind on to, apihita (= Gr. e)piqeto/s, epithet) put on to, (q. v.). -- 2. (conj. & part.). (a) in affirmative sentences meaning primarily "moreover, further, and then, even": -- (a) (single) prothetic: api dibbesu kāmesu even in heavenly joys Dh 187; ko disvā na pasīdeyya api kaṇhâbhijātiko even an unfortunate -- born Sn 563 api yojanāni gacchāma, even for leagues we go Pv iv.107 (= anekāni yojanāni pi g. PvA 270. Epithetic (more freq. in the form pi): muhuttam api even a little while Dh 106, 107; aham api daṭṭhukāmo I also wish to see Sn 685. Out of prothetic use (= even = even if) develops the conditional meaning of "if", as in api sakkuṇemu (and then we may = if we may) J v.24 (c. = api nāma sakkuṇeyyāma; see further under b appɔeva nāma). -- api -- api in correlation corresponds to Lat. et -- et Sk ca -- ca, meaning both . . . and, and . . . as well as, & is esp. freq. in combn.app' ekacce . . . app' ekacce (and) some . . . and others, i. e. some . . . others [not with Kern Toev. s. v. to appa!], e. g. at D i.118; Th 2, 216; VvA 208, etc. -- app' ekadā "morever once" = sometimes Vin iv.178; S i.162; iv.111; J i.67; DhA iii.303, etc. -- (b) (in combn with other emphatic or executive particles) api ca further, and also, moreover D i.96; Miln 25, 47. -- api ca kho moreover, and yet, still, all the same It 89 (+ pana v. l.); Miln 20, 239. -- api ca kho pana all the same, never mind, nevertheless J i.253. -- api ssu so much so Vin ii.76. -- app' eva nāma (with pot.) (either) surely, indeed, yes, I reckon, (or) I presume, it is likely that, perhaps Vin i.16 (surely); ii.85 (id.); cp. pi D i.205 (sve pi upasaŋkameyyāma tomorrow I shall surely come along), 226 (siyā thus shall it be); M i.460 = It 89 (moreover, indeed); J i.168 (surely) Vin ii.262 (perhaps) J v.421 (id., piyavācaŋ labheyyāma). -- (b) in interrog. -- dubit. sentences as part. of interrog. (w. indic. or pot.) corresponding to Lat. nonne, i e. awaiting an affirmative answer ("not, not then"): api Yasaŋ kulaputtaŋ passeyya do you not see . . . Vin i.16; api samaṇa balivadde addasā have you not then seen . . . S i.115; api kiñci labhāmase shall we then not get anything? J iii.26; api me pitaraŋ passatha do you then not see my father? PvA 38. -- Also combd. with other interr. part. e. g. api nu J. ii.415.