What does "bigram" mean?

An n-gram consisting of two items from a sequence.

What is a synonym for "bigram"?

Common synonyms include: digram, two word sequence.

/ˈbaɪ.ɡɹæm/ noun

noun ·Rare ·Advanced level

Noun

1
An n-gram consisting of two items from a sequence. attributive, often
"bigram model"
2
a word that is written with two letters in an alphabetic writing system wordnet

"In this context, a bigram refers to a string of two letters."

From bi- + -gram.