Definition of insertion in English:

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Pronunciation: /inˈsərSH(ə)n/


1The action of inserting something: the insertion of a line or two into the script
More example sentences
  • Just prior to insertion of the IV line, the dressing and cream should be removed.
  • They used invasive methods of blood pressure recording, possibly insertion of an arterial line.
  • Hello, strange indentation in shin identical to the little depressions alien abductees believe are the points of insertion for their implants.
1.1The placing of a spacecraft or satellite into an orbit or trajectory.
Example sentences
  • Since orbit insertion, the spacecraft has been spinning at the slow rate of 1 revolution every 3 minutes.
  • If there is only one thing I had to pick out, I think the most rewarding thing for me so far was watching those ring pictures come back after Saturn orbit insertion.
  • The Mars Observer launched in 1992 was lost the following year during orbit insertion.
2A thing that is inserted, in particular.
Example sentences
  • A quick insertion - recognizing the fragility of the physical is not the same thing as rejecting the physical.
2.1An amendment or addition inserted in a text.
Example sentences
  • The only snag is that, unlike sheets of paper covered with scribble, you tend to lose the process history of a poem when you work at a computer, all the scratchings out, insertions and additions.
  • Editorial insertions of stereotypes and fabrications into a Times reporter's copy extended at least into the 1980s.
  • Transcriptions from Newton's manuscripts represent deletions as strike-outs and insertions are enclosed within angle brackets.
2.2Each appearance of an advertisement in a newspaper or periodical.
Example sentences
  • There were 392 insertions in over 450 newspapers.
  • It has tactically placed more than 150 advertising insertions from January to June promoting the strapline, ‘Connects you to the world’.
  • In addition to cross-channel promotions, ad insertions and mailings will be utilized to lure potential customers.
2.3An ornamental section of cloth or needlework inserted into the plain material of a garment.
Example sentences
  • This pretty lace insertion would be wonderful added to a summer garment.
3 Anatomy & Zoology The manner or place of attachment of an organ: close to the point of leaf insertion
More example sentences
  • The first design trend we examine here is in the orientation of the pectoral fin base, defined externally as the angle of inclination of the insertion of the pectoral fin on the body.
  • The stiff peduncle, in turn, functions as a rigid base for the flexible insertion of the caudal fin.
  • The surgeon places two clips distal to the intended line of division and one on the cystic duct approximately 5 mm from its insertion into the common bile ducts.
3.1The manner or place of attachment of a muscle to the part that it moves: the names of the muscles and their insertions on the eyeball
More example sentences
  • Some patients may present with tendinopathy at the insertion of the Achilles tendon on the calcaneus.
  • The genioglossus muscles take origin from the middle of the back of the lower jaw and have a fan-like insertion into each side of the midline of the tongue.
  • The muscle is detached from its insertion at the greater tubercle of the humerus, leaving its blood supply to the thoracoacromial artery and internal mammary artery.
4 Biology The addition of extra DNA or RNA into a section of genetic material.
Example sentences
  • In these studies, the duplications are produced by transformation of the cloned DNA and its insertion into ectopic chromosomal locations.
  • Molecular access to the sda gene was via the sda HZ.P1 mutation by the method of plasmid rescue of genomic DNA flanking the transposon insertion.
  • In situ hybridization to polytene chromosomes confirmed that each insertion was in a typical euchromatic, banded region.


Mid 16th century (sense 2): from late Latin insertio(n-), from Latin inserere (see insert).

Words that rhyme with insertion

animadversion, aspersion, assertion, aversion, bioconversion, Cistercian, coercion, conversion, desertion, disconcertion, dispersion, diversion, emersion, excursion, exertion, extroversion, immersion, incursion, interspersion, introversion, Persian, perversion, submersion, subversion, tertian, version

For editors and proofreaders

Syllabification: in·ser·tion

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