The code snippet `for i in word` is part of...

The code snippet for i in word is part of a for loop in Python. Here's what it does:

1. word is assumed to be an iterable, commonly a string in this context.
2. The loop iterates over each element (or character, if word is a string) in word.
3. On each iteration, the variable i takes the value of the current element (or character) of the iterable.

For example:

word = "hello"
for i in word:
    print(i)

Output:

h
e
l
l
o

Each character in the string "hello" is printed one by one because the for loop iterates over each character of the string word.

If word is not a string but another iterable (e.g., a list, tuple, etc.), i will take the value of each element in that iterable in turn.