deletion

[dih-lee-shuh n] /dɪˈli ʃən/
noun
1.
an act or instance of deleting.
2.
the state of being deleted.
3.
a deleted word, passage, etc.
4.
Genetics. a type of chromosomal aberration in which a segment of the chromosome is removed or lost.
Origin
1580-90; < Latin dēlētiōn- (stem of dēlētiō) a destroying, equivalent to dēlēt(us) (see delete) + -iōn- -ion
Examples from the web for deletion
  • In both cases, they found a deletion of one particular gene.
  • It's not ideal but if any model goes against such detections needs modification, deletion or re-making.
  • For every deletion, something that happens during an unequal recombination or crossing over, a duplication occurs.
  • Those with the deletion also had a larger hypothalamus, the part of the brain that controls eating and sleep.
  • All wilderness parks are threatened by that little deletion.
  • Because they say, at one point, that immediate deletion is not always practicable due to the way the archiving systems operate.
  • Until they are handed back without alteration or deletion then a big question mark remains over what really happened.
  • Thus, when the observer makes a reversible deletion, he is actually siphoning heat off from the system.
  • If it were broken by a deletion, or frame-shift mutation, then it cannot be fixed by a single-step mutation.
  • And you have more gross genomic features such as gene duplication or deletion.
British Dictionary definitions for deletion

deletion

/dɪˈliːʃən/
noun
1.
the act of deleting or fact of being deleted
2.
a deleted passage, word, etc, in text
3.
the loss or absence of a section of a chromosome
Word Origin and History for deletion
n.

1580s, from Latin deletionem (nominative deletio), noun of action from past participle stem of delere (see delete).

deletion in Medicine

deletion de·le·tion (dĭ-lē'shən)
n.
Loss, as from mutation, of one or more nucleotides from a chromosome.