These are a few very enlightening words:

betathalassemia: thalassemia in which the longer hemoglobin chain is affected and which comprises Cooley's anemia in the homozygous condition and a less severe thalassemia in the heterozygous condition.

endoperoxide: any of various biosynthetic intermediates in the formation of prostaglandins.

phellogen: a secondary meristem that initiates phellem and phelloderm in the periderm of a stem - called also cork cambuim
(these definitions have come from the Merriam-Webster's dictionary.)

If anybody has occasion to properly use these fantastic words, do please tell me about it at dreambig16@hotmail.com