Another description of Lord Vishnu Universal Form (Viraata Swaroopa) is given in Bhagavada Gita, Chapter 11. Arjuna asked Lord Krishna to show his universal form, then Lord Krishna gave him divine eyes so that Arjuna can see his Universal form. Arjuna saw whole universe within Him, everything dissolving in Him. That form was so fierce that Arjuna trembled with fear.
I am providing the English Translation By Swami Sivananda.
अर्जुन उवाच
पश्यामि देवांस्तव देव देहे
सर्वांस्तथा भूतविशेषसङ्घान्।
ब्रह्माणमीशं कमलासनस्थ
मृषींश्च सर्वानुरगांश्च दिव्यान्।।11.15।।
11.15 Arjuna said I see all the gods, O God, in Thy body, and (also) hosts of various classes of beings, Brahma, the Lord, seated on the lotus, all the sages and the celestial serpents.
अनेकबाहूदरवक्त्रनेत्रं
पश्यामि त्वां सर्वतोऽनन्तरूपम्।
नान्तं न मध्यं न पुनस्तवादिं
पश्यामि विश्वेश्वर विश्वरूप।।11.16।।
11.16 I see Thee of boundless form on every side with many arms, stomachs, mouths and eyes: neither the end nor the middle nor also the beginning do I see, O Lord of the universe, O Cosmic Form.
किरीटिनं गदिनं चक्रिणं च
तेजोराशिं सर्वतोदीप्तिमन्तम्।
पश्यामि त्वां दुर्निरीक्ष्यं समन्ता
द्दीप्तानलार्कद्युतिमप्रमेयम्।।11.17।।
11.17 I see Thee with the diadem, the club and the discus, a mass of radiance shining everywhere, very hard to look at, blazing all round like burning fire and the sun, and immeasurable.
त्वमक्षरं परमं वेदितव्यं
त्वमस्य विश्वस्य परं निधानम्।
त्वमव्ययः शाश्वतधर्मगोप्ता
सनातनस्त्वं पुरुषो मतो मे।।11.18।।
11.18 Thou art the Imperishable, the Supreme Being, worthy to be known. Thou art the great treasure-house of this universe; Thou art the imperishable protector of the eternal Dhrama; Thou art the Primal Person, I deem.
अनादिमध्यान्तमनन्तवीर्य
मनन्तबाहुं शशिसूर्यनेत्रम्।
पश्यामि त्वां दीप्तहुताशवक्त्रम्
स्वतेजसा विश्वमिदं तपन्तम्।।11.19।।
11.19 I see Thee without beginning, middle or end, infinite in power, of endless arms, the sun and the moon being Thy eyes, the burning fire Thy mouth, heating the whole universe with Thy radiance.
द्यावापृथिव्योरिदमन्तरं हि
व्याप्तं त्वयैकेन दिशश्च सर्वाः।
दृष्ट्वाऽद्भुतं रूपमुग्रं तवेदं
लोकत्रयं प्रव्यथितं महात्मन्।।11.20।।
11.20 This space between the earth and the heaven and all the arters are filled by Thee alone; having seen this, Thy wonderful and teriible form, the three worlds are trembling with fear, O great-souled Being.
अमी हि त्वां सुरसङ्घाः विशन्ति
केचिद्भीताः प्राञ्जलयो गृणन्ति।
स्वस्तीत्युक्त्वा महर्षिसिद्धसङ्घाः
स्तुवन्ति त्वां स्तुतिभिः पुष्कलाभिः।।11.21।।
11.21 Verily, into Thee enter these hosts of gods; some extol Thee in fear with joined palms; saying 'may it be well', bands of great sages and perfected ones praise Thee with hymns complete.
रुद्रादित्या वसवो ये च साध्या
विश्वेऽश्िवनौ मरुतश्चोष्मपाश्च।
गन्धर्वयक्षासुरसिद्धसङ्घा
वीक्षन्ते त्वां विस्मिताश्चैव सर्वे।।11.22।।
11.22 The Rudras, Adityas, Vasus, Sadhyas, Visvedevas, the two Asvins, Maruts, the manes and the hosts of celestial singers, Yakshas, demons and the perfected ones, are all looking at Thee, in great amazement.
रूपं महत्ते बहुवक्त्रनेत्रं
महाबाहो बहुबाहूरुपादम्।
बहूदरं बहुदंष्ट्राकरालं
दृष्ट्वा लोकाः प्रव्यथितास्तथाऽहम्।।11.23।।
11.23 Having seen Thy immeasurable form with many mouths and eyes, O mighty-armed, with many arms, thighs and feet, with many stomachs and fearful with many teeth the worlds are terrified and so am I.
नभःस्पृशं दीप्तमनेकवर्णं
व्यात्ताननं दीप्तविशालनेत्रम्।
दृष्ट्वा हि त्वां प्रव्यथितान्तरात्मा
धृतिं न विन्दामि शमं च विष्णो।।11.24।।
11.24 On seeing Thee (the Cosmic Form) touching the sky, shining in many colours, with mouths wide open, with large fiery eyes, I am terrified at heart and find neither courage nor peace, O Vishnu.
दंष्ट्राकरालानि च ते मुखानि
दृष्ट्वैव कालानलसन्निभानि।
दिशो न जाने न लभे च शर्म
प्रसीद देवेश जगन्निवास।।11.25।।
11.25 Having seen Thy mouths fearful with teeth (blazing) like the fires of cosmic dissolution, I know not the four arters, nor do I find peace. Have mercy, O Lord of the gods, O abode of the universe.
अमी च त्वां धृतराष्ट्रस्य पुत्राः
सर्वे सहैवावनिपालसङ्घैः।
भीष्मो द्रोणः सूतपुत्रस्तथाऽसौ
सहास्मदीयैरपि योधमुख्यैः।।11.26।।
11.26 All the sons of Dhritarashtra, with the hosts of kings of the earth, Bhishma, Drona and Karna, with the chief among our warriors.
वक्त्राणि ते त्वरमाणा विशन्ति
दंष्ट्राकरालानि भयानकानि।
केचिद्विलग्ना दशनान्तरेषु
संदृश्यन्ते चूर्णितैरुत्तमाङ्गैः।।11.27।।
11.27 Some hurriedly enter Thy mouths with their terrible teeth, fearful to behold. Some are found sticking in the gaps between the teeth with their heads crushed to powder.
यथा नदीनां बहवोऽम्बुवेगाः
समुद्रमेवाभिमुखाः द्रवन्ति।
तथा तवामी नरलोकवीरा
विशन्ति वक्त्राण्यभिविज्वलन्ति।।11.28।।
11.28 Verily, just as many torrents of rivers flow towards the ocean, even so these heroes in the world of men enter Thy flaming mouths.
यथा प्रदीप्तं ज्वलनं पतङ्गा
विशन्ति नाशाय समृद्धवेगाः।
तथैव नाशाय विशन्ति लोका
स्तवापि वक्त्राणि समृद्धवेगाः।।11.29।।
11.29 As moths hurriedly rush into a blazing fire for (their own) destruction, so also these creatures hurriedly rush into Thy mouths for (their own) destruction.
लेलिह्यसे ग्रसमानः समन्ता
ल्लोकान्समग्रान्वदनैर्ज्वलद्भिः।
तेजोभिरापूर्य जगत्समग्रं
भासस्तवोग्राः प्रतपन्ति विष्णो।।11.30।।
11.30 Thou lickest up, devouring all the worlds on every side with Thy flaming mouths. Thy fierce rays, filling the whole world with radiance, are burning, O Vishnu!
आख्याहि मे को भवानुग्ररूपो
नमोऽस्तु ते देववर प्रसीद।
विज्ञातुमिच्छामि भवन्तमाद्यं
न हि प्रजानामि तव प्रवृत्तिम्।।11.31।।
11.31 Tell me, who Thou art, so fierce of form. Salutations to Thee, O God Supreme: have mercy. I desire to know Thee, the original Being. I know not indeed Thy working.
श्री भगवानुवाच
कालोऽस्मि लोकक्षयकृत्प्रवृद्धो
लोकान्समाहर्तुमिह प्रवृत्तः।
ऋतेऽपि त्वां न भविष्यन्ति सर्वे
येऽवस्थिताः प्रत्यनीकेषु योधाः।।11.32।।
11.32 The Blessed Lord said I am the full-grown world-destroying Time, now engaged in destroying the worlds. Even without thee, none of the warriors arrayed in the hostile armies shall live.