in reference to the epoch that began 10,000 years ago and continues today, 1897, from French holocène (1867), from Greek holos "whole" (from PIE root *sol- "whole, well-kept") + -cene. The notion is "entirely new."
holm
Holmesian
holmium
holo-
holocaust
Holocene
hologram
holograph
holographic
holography
holomorphic