vyatimarṣa | व्यतिमर्ष | vyatimarSa
vy-ati-marṣa | व्य्-अति-मर्ष | m. (√ mfṣ | म्फ़्ष् |) a partic. kind of Vihāra (mutual transposition of the several Pādas or half verses or whole verses of the first and second Vālakhilya hymns which are repeated in sets, two always taken together), MW.