What does Izaac mean?
Izaac /iza-ac/ [2 sylls.] as a boys' name is of Hebrew derivation, and the meaning of the name Izaac is "laughter". Izaac is an alternate spelling of Isaac (Hebrew) with the prefix Iz-.
How popular is Izaac?
Izaac is an uncommonly occurring given name for men. Izaac is an unusual last name too for all people. (2000 U.S. Census)
Below is a charted analysis of the popularity of the boy name Izaac and associated names. Isaac (#31 in 2014), Issac (#553), Zack, Zak, Isak, Isaak and Ike are the popular related forms of Izaac (not ranked) rated in the Top 1000. Usage of these boy names was at its apex during 1880-1889 (usage of 0.4041%) and is now much less (usage 0.2023%, ▼49.9%), with the forms Zack, Isaak and Ike becoming less trendy. Isaac (#31) and Issac (#553) are two of the more trendy names for newborns in this compilation, and there is also a rebound in baby name usage for both names. (2014 Birth Statistics)