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.

diffuse

UK /dɪˈfjuːz/ · US /dɪˈfjuz/ verb, adjective

verb (transitive) To spread (something) over or through as in air, water, or other matter, especially by fluid motion or passive means. “The small window diffuses light throughout the room.”
verb (intransitive) To be spread over or through as in air, water, or other matter, especially by fluid motion or passive means. “Food coloring diffuses in water.”
adjective Everywhere or throughout everything; not focused or concentrated. “Such a diffuse effort is unlikely to produce good results.”
adjective Wordy; verbose.

Synonyms

From Middle French diffuser, from Latin diffūsus, past participle of diffundere, from dis- + fundere.

From Middle English *diffuse (attested in adverb diffuseli), from Latin diffūsus.

verb To pour out and cause to spread, as a fluid; to cause to flow on all sides; to send out, or extend, in all directions; to spread; to circulate; to disseminate; to scatter; as to diffuse information.
verb To pass by spreading every way, to diffuse itself.
adjective Poured out; widely spread; not restrained; copious; full; esp., of style, opposed to concise or terse; verbose; prolix; as, a diffuse style; a diffuse writer.

Etymology [L. diffusus, p. p. of diffundere to pour out, to diffuse; dif- = dis- + fundere to pour. See Fuse to melt.]

Etymology [L. diffusus, p. p.]

Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “diffuse”, CC BY-SA 4.0. Details

Sanskrit dictionary entries whose meaning includes “diffuse” (best matches first).

घुंष् ghuṃṣ ghuṃṣate, etc., to diffuse lustre.
आवितन् ā-vi-tan -tanute, -nitum, to diffuse light over, illuminate.
विस्तृत vi-stṛta diffused, extended, spread; diffuse; expanded, broad; ample.
आयत ā-yata long; diffuse, prolix; ( as ), m. an oblong figure (in geometry).
प्रस् pras prasate, prasitum, to extend, expand, spread, diffuse; to bring forth young.
अनुसन्तन् anu-san-tan -tanoti, -nitum, to overspread, diffuse, extend everywhere, to join on, continue.
घंष् ghaṃṣ and ghaṃs, cl. 1. A. ghaṃṣate, ghaṃsate, to diffuse lustre or splendor; to flow; to stream.
सविस्तर sa-vistara having diffuseness, diffuse, detailed, complete; ( am ), ind. with all details, in detail, in extenso.