INVOLUCRUM
\ɪnvˈɒlʌkɹəm], \ɪnvˈɒlʌkɹəm], \ɪ_n_v_ˈɒ_l_ʌ_k_ɹ_ə_m]\
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In Hydromedusae, the protective cup into which nematocysts can be spirally retracted; the metanotum of Orthoptera; an involucre.
By Henderson, I. F.; Henderson, W. D.
Word of the day
dust storm
- a windstorm that lifts up clouds of dust or sand a windstorm that lifts up clouds dust or sand; "it was the kind of duster not experienced in years"