Word: stepsister
Part of speech: Noun
Syllables: step
sis
ter
Definition: The stepdaughter of one's parent which is not one's half-sister.
Morphemes:
Affix: step-
Language: en
PoS: Prefix
Meaning: A prefix used before father, mother, brother, sister, son, daughter, child, and so forth, to indicate that the person being identified is not a blood relative but is related through the marriage of a parent.
Affix: sister
Language: en
PoS: Noun
Meaning: A daughter of the same parents as another person; a female sibling.