Āpa & Āpo

neuter water; philosophically t. t. for cohesion, representative of one of the 4 great elements (cp. mahābhūta), viz. paṭhavī, āpo, tejo vāyo: see Cpd. 268 & Dhs trsl. 201, also below ˚dhātu. DN.ii.259; MN.i.327; SN.ii.103; SN.iii.54, SN.iii.207; AN.iv.312, AN.iv.375; Snp.307, Snp.391 (˚ṃ), Snp.392 (loc. āpe), Snp.437 (id.); Ja.iv.8 (paṭhavi-āpa-teja˚); Dhs.652; Mil.363 (gen. āpassa, with paṭhavī etc.); Sdhp.100.

-kasiṇa the water-device, i.e. meditation by (the element of) water (cp. Mystic 75 n.) DN.iii.268; Ja.i.313; Dhs.203 Vism.170; Dhp-a.i.312; Dhp-a.iii.214. -dhātu the fluid element the essential element in water, i.e. element of cohesion (see Cpd. 155 n. 2; Mystic 9 n. 2; Dhs trsl. 201, 242; DN.iii.228, DN.iii.247; MN.i.187, MN.i.422: Dhs.652; Ne.74. See also dhātu
■ rasa
the taste of water AN.i.32; Snp-a.6 -sama resembling water MN.i.423.

Vedic ap & āp, f. sg. apā, pl. āpaḥ, later Sk. also āpaḥ nt
■ Idg.; *ap & *ab;, primarily to Lith. ùpé water, Old Prussian ape river, Gr. ̓*Λπία Name of the Peloponnesus; further (as *ab) to Lat. amnis river Sk. abda cloud, & perhaps ambu water