rudimentary
adjective
ru·di·men·ta·ry
ˌrü-də-ˈmen-tə-rē 
-ˈmen-trē
1
: consisting in first principles : fundamental
had only a rudimentary formal education—
D. J. Boorstin
D. J. Boorstin2
: of a primitive kind
the equipment of these past empire-builders was rudimentary—A. J. Toynbee
A. J. Toynbee3
: very imperfectly developed or represented only by a vestige
the rudimentary tail of a hyrax
Examples of rudimentary in a Sentence
Because now, every schlemiel with a pair of mirrored sunglasses and a rudimentary grasp of the rules of poker thinks he can play cards with the pros.
—A. J. Jacobs, New York Times Book Review, 8 May 2005
Despite the rudimentary nature of its instruments—an octant, a chronometer and a level—the Lewis and Clark Expedition was a triumph for science and natural history.
—Daniel J. Boorstin, U.S. News & World Report, 11 July 1994
A few were hopeless imbeciles, unable to comprehend more than the rudimentary requirements of filling their bellies when food was placed before them …
—Edgar Rice Burroughs, The Monster Men, 1929
This class requires a rudimentary knowledge of human anatomy.
When baseball was in its rudimentary stages, different teams played by different rules.
Some insects have only rudimentary wings.
A. J. Jacobs, New York Times Book Review, 8 May 2005
Despite the rudimentary nature of its instruments—an octant, a chronometer and a level—the Lewis and Clark Expedition was a triumph for science and natural history.
—Daniel J. Boorstin, U.S. News & World Report, 11 July 1994
A few were hopeless imbeciles, unable to comprehend more than the rudimentary requirements of filling their bellies when food was placed before them …
—Edgar Rice Burroughs, The Monster Men, 1929
This class requires a rudimentary knowledge of human anatomy.
When baseball was in its rudimentary stages, different teams played by different rules.
Some insects have only rudimentary wings.
Recent Examples on the Web
Children’s Language Skills Young children whose language skills are rudimentary with tenses often confused are inexperienced reporters of what may have happened to them.
—Patricia Fersch, Forbes.com, 8 May 2025
Previous rudimentary systems to communicate with these animals involved a large dolphin-nose-sized keyboard mounted to the side of the boat back in the 1990s.
—New Atlas, 15 Apr. 2025
Doing the most rudimentary exercise in a cap system would show that overall economic parity would change little.
—Maury Brown, Forbes.com, 30 Apr. 2025
To do this, a small team at the automaker’s Weissach development center outfitted the Martini silver vehicle with rudimentary exhaust mufflers, additional mirrors, side indicators, a horn, and even a spare wheel hidden away beneath the rear clamshell.
—Bryan Hood, Robb Report, 25 Apr. 2025
See All Example Sentences for rudimentary
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Patricia Fersch, Forbes.com, 8 May 2025
Previous rudimentary systems to communicate with these animals involved a large dolphin-nose-sized keyboard mounted to the side of the boat back in the 1990s.
—New Atlas, 15 Apr. 2025
Doing the most rudimentary exercise in a cap system would show that overall economic parity would change little.
—Maury Brown, Forbes.com, 30 Apr. 2025
To do this, a small team at the automaker’s Weissach development center outfitted the Martini silver vehicle with rudimentary exhaust mufflers, additional mirrors, side indicators, a horn, and even a spare wheel hidden away beneath the rear clamshell.
—Bryan Hood, Robb Report, 25 Apr. 2025
See All Example Sentences for rudimentary
Cite this Entry
“Rudimentary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rudimentary. Accessed 23 May. 2025.
Copy CitationKids Definition
rudimentary
adjective
ru·di·men·ta·ry
ˌrüd-ə-ˈment-ə-rē
-ˈmen-trē
2
: very imperfectly developed or represented only by a small part compared to the fully developed form
a rudimentary tail
Medical Definition
rudimentary
adjective
ru·di·men·ta·ry
ˌrüd-ə-ˈment-ə-rē, -ˈmen-trē
: very imperfectly developed or represented only by a vestige
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