obligate

IPA: ˈɑbɫʌgeɪt

(transitive, Canada, US, Scotland) To bind, compel, constrain, or oblige by a social, legal, or moral tie.
(transitive, Canada, US, Scotland) To cause to be grateful or indebted; to oblige.
(transitive, Canada, US, Scotland) To commit (money, for example) in order to fulfill an obligation.

(biology) Requiring a (specified) way of life, habitat, etc..
Indispensable; essential; necessary; obligatory; mandatory; unavoidably invoked.

Examples of "obligate" in Sentences

SURVIVAL TIP #3: Don't "obligate" yourself into Wedding Overload
For this reason, viruses are called obligate intracellular parasites.
Some prokaryotes are poisoned by oxygen and are called obligate anaerobes.
Because these probes remain obligate tetramers, they are not the best choice for labeling proteins.
Some prokaryotes cannot grow in the absence of oxygen for cellular respiration and are called obligate aerobes.
Recovery Act deadline to "obligate" - or commit to specific projects - 100 percent of their highway Recovery funds.
Transportation Secretary Ray LaHood announced that every state and the District of Columbia met the March 2 Recovery Act deadline to "obligate" - or commit to specific projects - 100 percent of their highway Recovery funds.
This dolphin is among the four "obligate" freshwater dolphins found in the world - the other three are the baiji found in the Yangtze river in China, the bhulan of the Indus in Pakistan and the boto of the Amazon River in Latin America.
The female feeds the tadpole special infertile decapsulated eggs pumilio are known as obligate egg-feeders, along with D. histrionicus and D. lehmanni, often assisted by the male, who will call from tad-containing axils to encourage the female to swing by and feed the kids.