The Spanish word 'glándula' (meaning 'gland') comes from the Latin word 'glandula', which meant 'small acorn' or 'tonsil'. The Latin 'glandula' itself was formed by combining 'glans' (meaning 'acorn') with the diminutive suffix '-ula'. This etymology reflects how early anatomists noticed that certain organs in the body resembled small acorns in shape, leading to the anatomical term we use today.

While 'glándula' doesn't have many common Spanish relatives that would be simpler for students to recognize, it's worth noting that this word is fairly consistent across many Romance languages, appearing as 'glande' in medical terminology to refer to the tip of certain anatomical structures.

English speakers might recognize the connection to the word 'gland', which comes from the same Latin root. The English anatomical term 'glans' is also directly borrowed from the Latin 'glans', originally meaning 'acorn', and is used in medical terminology to describe acorn-shaped anatomical structures. The connection between acorns and glands might help English speakers remember both the spelling and meaning of the Spanish 'glándula'.