from
The Collaborative International Dictionary of English v.0.48
Necessitate \Ne*ces"si*tate\, v. t. [imp. & p. p.
{Necessitated}; p. pr. & vb. n. {Necessitating}.] [Cf. L.
necessitatus, p. p. of necessitare, and F. n['e]cessiter. See
{Necessity}.]
1. To make necessary or indispensable; to render unavoidable.
[1913 Webster]
Sickness [might] necessitate his removal from the
court. --South.
[1913 Webster]
This fact necessitates a second line. --J. Peile.
[1913 Webster]
2. To reduce to the necessity of; to force; to compel.
[1913 Webster]
The Marquis of Newcastle, being pressed on both
sides, was necessitated to draw all his army into
York. --Clarendon.
[1913 Webster]