aden/o, thyr/o, thyroid/o, endocrin/o

aden/o means gland, thyr/o and thyroid/o name the thyroid gland, and endocrin/o names the hormone-secreting system (Greek).

"AD-en-oh / THY-royd-oh / EN-doh-krin-oh." Coach: "Aden means gland; thyr and thyroid name one major gland; endocrine names the hormone system."

Examples: endocrine, endocrinology, endocrinologist, endocrinopathy, thyroiditis.

Also: thyroidectomy, hyperthyroidism, hypothyroidism, adenoma, adenopathy, adenocarcinoma, thyroid.