rudiment
noun
[ ˈruːdɪm(ə)nt ]
• the first principles of (a subject).
• "she taught the girls the rudiments of reading and writing"
Similar:
basic principles,
basics,
fundamentals,
elements,
essentials,
first principles,
beginnings,
foundation,
nuts and bolts,
ABC,
• an undeveloped or immature part or organ, especially a structure in an embryo or larva which will develop into an organ, limb, etc.
• "the fetal lung rudiment"
• a basic pattern used by drummers, such as the roll, the flam, and the paradiddle.
Origin:
mid 16th century: from French, or from Latin rudimentum, from rudis ‘unwrought’, on the pattern of elementum ‘element’.