The Collaborative International Dictionary of English v.0.48:

Alimentation \Al`i*men*ta"tion\, n. [Cf. F. alimentation, LL.
   alimentatio.]
   1. The act or process of affording nutriment; the function of
      the alimentary canal.
      [1913 Webster]

   2. State or mode of being nourished. --Bacon.
      [1913 Webster]

WordNet (r) 3.0 (2006):

alimentation
    n 1: a source of materials to nourish the body [syn:
         nutriment, nourishment, nutrition, sustenance,
         aliment, alimentation, victuals]
    2: the act of supplying food and nourishment [syn: feeding,
       alimentation]

Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "alimentation":
   aliment, alimony, bread, bread and butter, food chain, keep,
   livelihood, maintenance, nourishment, nurture, nutriment,
   nutrition, nutriture, pabulum, pap, refection, refreshment,
   subsistence, support, sustenance