ef·fec·tu·al 
(ĭ-fĕkch-əl)
(ĭ-fĕkch-əl)adj.
Producing or sufficient to produce a desired effect. See Synonyms at effective.
[Middle English effectuel, from Old French, from Late Latin effectuālis, from Latin effectus, result, effect; see EFFECT.]
ef·fec′tu·ali·ty (-ălĭ-tē) n.
ef·fectu·al·ly adv.
- intraspecies
- intraspecific
- intrastate
- intrauterine
- intrauterine device
- intravasation
- intravascular
- intravascularly
- intravenous
- intravenously
- intravenous pyelogram
- intravenous pyelography
- intravital
- intravitally
- intreat
- intrench
- intrench
- intrepid
- intrepidity
- intrepidly
- intrepidness
- intricacy
- intricate
- intricately
- intricateness