Strong's Definition
a primitive root; to estimate
KJV Usage: make count
STEPBible — Tyndale Abridged Hebrew Lexicon
כָּסַס (ka.sas) — to compute. (Qal) to estimate, reckon, compute
UBS Dictionary of Biblical Hebrew
verb
Know | verb qal
to make a calculation, to make an estimation = action by which humans make an estimation with regards to an object
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
[כָּסַס] vb. compute—only Qal Ex 12:4 (P) ref