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1. the relatively more dense cytoplasm found at the periphery of a cell. Compare endoplasm.

2. in spiritualism, a viscous substance said to emanate from a medium’s body during a seance. Also called teleplasm. See also materialization. —ectoplasmic adj.

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Psychology term of the day

March 3rd 2024



1. symbol for the coefficient of concordance.

2. symbol for the statistic obtained from the Wilcoxon rank-sum test.