1. هرد-
hrd- n. Herz (RV + [härdi NomAkkSg (s.u.), hrd-ds GenSg, hrd-€ DatSg, hrt-si LokPl u.a.], AiGr III 236f.); *härd- in RV (8,2,5), AV + su-härd- mit gutem Herzen, befreundet, AV dur-härd- übeigesinnt, Feind, °hrd- in Sü + su-hrd- Freund, RV 10,160,3 sarva-hrd-ä InstrSg ‘von ganzem Herzen’; hrdayan. Herz (RV +); Ahrdya- herzlich geliebt (RV +), hrddyotam. ein inneres Gebrechen (s.o. I 754). - Mi., nu., dard., ni., pä. … — [Mayrhofer, s.v. hrd-, p. 846]
2. hṛd
hṛd n. (optionally substituted for hṛdaya in the weak cases i.e. in all except the first five inflexions; thought to be connected with śrad, q.v. ) the heart (as the seat of feelings and emotions), soul, mind (as seat of thought and intellectual operations; hṛdyavedin, ‘having no capacity of knowledge in the heart or mind’, said of animals), breast, chest, stomach, interior (also in older language, ‘interior of the body’), RV. ; &c.
3. hṛdi
hṛdi ( loc. of hṛd), in comp.