The only free and comprehensive online etymological dictionary of the Spanish language
-ecer Inchoative verb-forming suffix
From Latin -escere, -iscere, and -ascere 'id.,' depending on the vowel stem. From Proto-Italic *-sk-e/o- 'id.' From Proto-Indo-European *-sḱ-e/o- 'id.'
Indo-European
Romance
Asturian -ecer, Portuguese -ecer, -escer, Catalan -eix, French -is, Italian -isco, Aromanian -esc
Italic
Umbrian -sk-
Celtic
Old Irish -c
Germanic
Gothic *-h- (in fraihnen),
Balto-Slavic
Lithuanian *-šý- (in prašýti), Old Church Slavonic *-si- (in prositi)
Indo-Iranian
Sanskrit *-ch- (in pr̥chā́mi "to ask"), Avestan *-sa (in pərəsa "to ask")
"The productive descendants of [Proto-Indo-European *-sḱ-é/ó-] differ in meaning from branch to branch. In Anatolian, the suffix indicates repeated, habitual, or background action, or action applied to more than one object... The habitual or durative sense is also found in Homeric Greek... Other Latin verbs with the suffix, however, are inchoatives (indicating the beginning or inception of an action or state)... Several verbs having the suffix that are reconstructible for PIE refer to asking or wishing, indicating perhaps that the suffix also once had a desiderative function." ~ B. Fortson, Indo-European Language and Culture (2011)
echar (Verb) "to throw"
12th cent. From Vulgar Latin *iectare 'id.' From Latin iactare "to hurl," from iacere "to throw" and frequentive suffix -tare (see note under faltar). From Proto-Italic *jak-i- 'id.' From late Proto-Indo-European word *(H)i̯h1-k-i̯- 'id.,' a formation from an originally aorist verb *Hi̯h1- 'id.'
Indo-European
Romance
Asturian echar, French jeter, Italian gettare, Sardinian ghetare
Hellenic
Ancient Greek ἵημι (híemi) "to release," Mycenaean i-je-si 'id.'
-eco Suffix indicating deformity and perversion.
From Nahuatl -ic 'id.' Highly endemic to Central America dialects located in Nahuatl's historic linguistic territory. Not related to the diminutive suffix -eco, from Latin -icus.
edad f. (Noun) "age"
12th cent. From Latin ætas 'id.' From Old Latin aivom "time" (see evo) with noun-forming suffix -tas (see -dad).
Indo-European
Romance
Asturian edá, Portuguese idade, Galician idade, Catalan edat, Italian età, Romanian etate
-edad, -idad Noun-forming suffix indicating a state of being.
From Latin -itatem, accusative of -itas 'id.' From Proto-Italic *-i-tāts, an i-stem with suffix *-tāts (see -dad).
edición f. (Noun) "edition"
16th cent. From Medieval Latin editionem, accusative of editio "publication." From Latin edere "to publish," but originally meaning "to produce."

The word edere is composed of two parts. The first part, e-, is from the prefix ex- "out" (see ex-). The second, -dere, is a relict of the Proto-Indo-European root *dheh1- "to put." Normally *dh- became f- in Latin, but the presence of the prefix e- prevented the change from happening. Cf. hacer, which came from *dheh1- without the prefix.
Indo-European
Romance
Portuguese edição, French édition, Italian edizione, Romanian ediție
edificar (Verb) "to build"
13th cent. From Latin ædificare 'id.' from ædes "building" and facere "to make" (see hacer). Latin ædes is from Proto-Italic *aiþ- "hearth." From Proto-Indo-European *h2i̯dh- "to burn."
Indo-European
Romance
Portuguese edificar, French édifier, Italian edificare
Italic
Oscan aídíl, Faliscan efiles, Volscan aidiles
Celtic
Old Irish áed "fire," Welsh aidd "ardor," Middle Breton oaz "jealousy"
Germanic
Old High German eit "pyre," Old English ād 'id.'
Hellenic
Ancient Greek αἴθειν (aíthein) "to burn"
Indo-Iranian
Sanskrit édha- "firewood," -idh- "igniting"
edificio m. (Noun) "building"
13th cent. From Latin ædificium 'id.,' from ædificare "to build" (see edificar).
Indo-European
Romance
Portuguese edifício, Catalan edifici, French édifice, Italian edificio, Romanian edificiu
editar (Verb) "to edit"
19th cent. Borrowed from French éditer 'id.' From Latin editus "published," from the verb edere "to publish" (see edición).
eeuu m. (Noun) "United States"
An abbreviation of estados unidos. The double letters indicate each respective word is plural. See estado and unir.