Pronunciation guide: IPA symbols, stress and word endings

θ	thin	ð	this	ʃ	she	ʒ	measure
tʃ	church	dʒ	judge	ŋ	sing	j	yes

p b t d k g f v s z h m n l r w sound as in ordinary English spelling.

ˈ main stress, before the stressed syllable: /ˈwɔːtə/ water · ˌ lighter (secondary) stress: /ˌʌndəˈstænd/ understand
ː a long vowel · (r) an r said only in accents that pronounce it (most American, Scottish, Irish)

-s / -es (plurals; he/she form of verbs): /s/ after voiceless sounds (cats), /z/ after voiced (dogs), /ɪz/ after s, z, sh, ch, j sounds (buses, watches). Spelling: -es after s, x, z, ch, sh; consonant + y → -ies (city → cities).
-ed (past): /t/ after voiceless sounds (walked), /d/ after voiced (played), /ɪd/ after t or d (wanted). Spelling: love → loved, stop → stopped, carry → carried.
-ing: make → making, run → running, see → seeing.
Irregular: go, went, gone · be, was, been · see, saw, seen · man → men · child → children · mouse → mice.
Older (King James) forms: -eth = -s (he loveth = he loves) · -est with “thou” (thou lovest) · spake = spoke.

electronic

UK /ˌɛl.ɛkˈtɹɒn.ɪk/ · US /ɪˌlɛkˈtɹɑ.nɪk/ adjective, noun

adjective (physics, chemistry) Of or pertaining to an electron or electrons.
adjective Operating on the physical behavior of electrons, especially in semiconductors. “electronic timer”
adjective Generated or transmitted by an electronic device. “electronic music”
adjective Of or pertaining to digital or computer technology.
adjective Denoting a method analogous to the named non-electronic object or practice “electronic mail”
adjective Of or pertaining to the Internet.
noun A device which runs on electricity.

Webster’s 1913

Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “electronic”, CC BY-SA 4.0. Details