Fosterage
WordNet
noun
(1) Helping someone grow up to be an accepted member of the community
"They debated whether nature or nurture was more important"
(2) Encouragement; aiding the development of something
WiktionaryText
Noun
- An act of fostering another's child as if it were your own.
- A condition of being the foster child.
- Promoting or encouragement given by act or word.