samyak-saṃbodhi; absolute universal enlightenment, omniscience, a quality of and term for a Buddha; also the 51st stage in the enlightenment of a bodhisattva, the attainment of the Buddha, enlightenment which precedes 妙覺.

A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous

１．佛的別稱。等是平等，覺是覺悟，諸佛的覺悟，平等一如，故名等覺。２．大乘五十二階位中，第五十一位，名為等覺，即十地位滿，將證佛果之中間階段，因其智慧功德，等似妙覺，故名等覺，又名一生補處，或金剛心菩薩。

陳義孝編, 竺摩法師鑑定, 《佛學常見辭彙》

等覺 [py] děngjué [wg] teng-chiao [ko] 등각 tŭnggak [ja] トウガク tōgaku ||| "Equal enlightenment" The rank of bodhisattvahood where the practitioner has enlightenment equal to that of a buddha, but is yet a bodhisattva. Following this stage the practitioner enters the stage of 'marvelous enlightenment' (妙覺).
 

[Dictionary References] Naka1003a Iwa603 [Credit] cmuller(entry) cwittern(py)

參看「正覺」。

漢譯阿含經辭典，莊春江編(1.4版)

saṃbuddha, abhisaṃbodha, abhisaṃbudhya*

佛教漢梵大辭典

p.2726-2731

等覺 (děng jué) 　“one, who has attained equal enlightenment” cf. 等正覺(děng zhèng jué), 正覺(zheng4 jue2), 最正覺(zuì zhèng jué)

{not found at 《漢語大詞典》8.1142.} ; {not found at 《大漢和辞典》8.773.} ;

Dharmarakṣa: {93a6} 諸天龍神 阿須倫等…… 雨諸天華 紛紛如降 用散等覺 人中之導(v)

{K.190.4} buddha~

Kumārajīva: {L.26a29} 佛

A Digital Edition of A Glossary of Dharmarakṣa translation of the Lotus Sutra by Seishi Karashima, 1998