The noun manifestation has 5 senses (first 2 from tagged texts)
1. (6) manifestation -- (a clear appearance; "a manifestation of great emotion")
2. (3) manifestation -- (a manifest indication of the existence or presence or nature of some person or thing; "a manifestation of disease")
3. materialization, materialisation, manifestation -- (an appearance in bodily form (as of a disembodied spirit))
4. expression, manifestation, reflection, reflexion -- (expression without words; "tears are an expression of grief"; "the pulse is a reflection of the heart's condition")
5. demonstration, manifestation -- (a public display of group feelings (usually of a political nature); "there were violent demonstrations against the war")