I did find a few forms of the word "latria" using a concordance.
Interesting 2 of those times it [#3000] is used in Revelation
Young) Revelation 7:15 because of this are they before the throne of God, and they do service/latreuousin <3000> (5719) to Him day and night in His sanctuary, and He who is sitting upon the throne shall tabernacle over them;
Young) Revelation 22:3 and any curse there shall not be any more, and the throne of God and of the Lamb shall be in it, and His servants shall serve/latreusousin <3000> (5692) Him,
http://www.blueletterbible.org/lang/lexicon/lexicon.cfm?Strongs=G2999&t=KJV
Strong's Number
G2999 matches the Greek
λατρεία (latreia), which occurs 5 times in 5 verses in the Greek concordance of the KJV
2999. latreia lat-ri'-ah from 3000; ministration of God, i.e. worship:--(divine) service.
http://www.blueletterbible.org/lang/lexicon/lexicon.cfm?Strongs=G3000&t=KJV
Strong's Number
G3000 matches the Greek
λατρεύω (latreuō), which occurs 21 times in 21 verses in the Greek concordance of the KJV
3000. latreuo lat-ryoo'-o from latris (a hired menial); to minister (to God), i.e. render religious homage:--serve, do the service, worship(-per).