pari-

1.
a combining form meaning “equal,” used in the formation of compound words:
paripinnate.
Origin
< Late Latin pari- combining form of pār par1

pari passu

[pah-ree pahs-soo; English pair-ahy pas-oo, pair-ee] /ˈpɑ ri ˈpɑs su; English ˈpɛər aɪ ˈpæs u, ˈpɛər i/
Latin.
1.
with equal pace or progress; side by side.
2.
without partiality; equably; fairly.
British Dictionary definitions for pari

pari-

combining form
1.
equal or equally; even (in number): parisyllabic, paripinnate
Word Origin
from Latin par

pari passu

/ˌpærɪ ˈpæsuː; ˈpɑːrɪ/
adverb
1.
generally (law) with equal speed or progress; equably: often used to refer to the right of creditors to receive assets from the same source without one taking precedence
Word Origin and History for pari

pari passu

Latin, literally "with equal step," from ablative of par "equal" (see par) + passus "pace" (see pace (n.)).

pari in Technology
mathematics, tool
A system for symbolic mathematics, especially number theory.
Version 1.37 for Unix, Macintosh, MS-DOS, Amiga.
E-mail: .
(ftp://math.ucla.edu/pub/pari).
(1995-04-12)