obligate
/ˈɒblɪɡeɪt/Definitions
1. verb
to make someone or something morally or legally required to do something
“The court obligates the company to pay damages.”
2. verb
to require something to be used for a particular purpose
“The new law obligates the government to fund environmental projects.”
3. noun
a relationship in which one organism depends on another for nutrients
“Parasitism is an obligate relationship between the parasite and its host.”
4. noun
a plant that requires a specific environment or conditions to grow
“The obligate plant species can only thrive in tropical climates.”