sequence

noun

• 1a particular order in which related things follow each other:the content of the programme should follow a logical sequence [mass noun]:the poems should be read in sequence
• Music a repetition of a phrase or melody at a higher or lower pitch: a restless search for interesting harmonic sequences
• Biochemistry the order in which amino-acid or nucleotide residues are arranged in a protein, DNA, etc.: these are enzymes which will cleave only at specific base sequences in the DNA

• 2a set of related events, movements, or items that follow each other in a particular order:a gruelling sequence of exercises a sonnet sequence
• a set of three or more playing cards of the same suit next to each other in value, for example 10, 9, 8.
• Mathematics an infinite ordered series of numerical quantities.

• 3a part of a film dealing with one particular event or topic:the famous underwater sequence

• 4(in the Eucharist) a hymn said or sung after the Gradual or Alleluia that precedes the Gospel.

verb

• 1arrange in a particular order:trainee librarians decide how a set of misfiled cards could be sequenced
• Biochemistry ascertain the sequence of amino-acid or nucleotide residues in (a protein, DNA, etc.): we have undertaken to isolate and sequence the rat retinoblastoma cDNA (as noun sequencing)independent clones were analysed by DNA sequencing

• 2play or record (music) with a sequencer.