Samyantim - Dissolve

āmūlāt kiraṇābhāsāṃ sūkṣmāt sūkṣmatarātmikam |
cintayet tāṃ dviṣaṭkānte
śyāmyantīm bhairavodayaḥ || 28 ||

More references needed. Swami Satyasangananda defines as “dissolves.” Uses Shaamyanteem spelling.
Lakshmanjoo and John Hughes use samyantim, with diacriticals.
The text uses śyāmyantīm
Jaideva Singh uses syamyantim in his VBT, link.

The Soma-hymns of the Ṛgveda, Oriental Institute, 1962
Shrikrishna Sakharam Bhawe

The Yoga of delight, wonder, and astonishment: a translation of ... - Page 25
Jaideva Singh - 1991 - 173 pages - Google eBook - Preview
AmQlat kiranabhasam suksmatsuksmataratmikam/ Cintayet tarn dvisatkante syamyantim Bhairavodayah// 28. TRANSLATION Meditate on the Sakti1 arising from the muladhara cakra2, scintillating like rays (of the sun), and getting subtler and ...

Is this the same word?

The library of original sources: Volume 1 - Page 166
Oliver Joseph Thatcher - 1907 - Free Google eBook - Read
This is the immortal, the fearless, this Brahman. Even though they drop melted butter or water on him, it runs away on both sides. 2. 'They call him Samyadvama , for all blessings (vama) go towards him (samyanti). ...

Śrīmad-Bhāgavatam: with a short life sketch of Lord Śrī Caitanya ...: Part 2; Part 2
A. C. Bhaktivedanta Swami Prabhupāda, Hridayananda Goswami, A. C. Bhaktivedanta Swami Prabhupāda - 1989 - Snippet view
... those actually understanding the value of life; sannyasya — surrendering unto the lotus feet of Krsna; samyanti — they achieve; abhayam — where there is no anxiety; padam — the abode; hareh — of the Supreme Personality of Godhead. ...