hem/o, hemat/o
hem/o and hemat/o mean blood (Greek).
"HEE-moh / hee-MAT-oh." Coach: "Hem and hemat mean blood, even when the spelling shifts."
Examples: hematology, hematoma, hematuria, hemolysis, hemorrhage.
Also: hemoglobin, hematocrit, hematopoiesis, hematemesis, hemoptysis, hemostasis, hemothorax.