| spatangoid | <zoology> Of or pertaining to the Spatangoidea. One of the Spatangoidea. Source: Websters Dictionary (01 Mar 1998) |
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| spatangoidea | <zoology> An order of irregular sea urchins, usually having a more or less heart-shaped shell with four or five petal-like ambulacra above. The mouth is edentulous and situated anteriorly, on the under side. Origin: NL. See Spatangus, and -oid. Source: Websters Dictionary (01 Mar 1998) |
| spatangus | <zoology> A genus of heart-shaped sea urchins belonging to the Spatangoidea. Origin: NL, fr. L. Spatangius a kind of sea urchin, Gr. Source: Websters Dictionary (01 Mar 1998) |
| spatha | Origin: L. <botany> A spathe. Source: Websters Dictionary (01 Mar 1998) |
| spathaceous | Having a spathe, or having the nature of a spathe. (09 Oct 1997) |
| spathal | <botany> Furnished with a spathe; as, spathal flowers. Source: Websters Dictionary (01 Mar 1998) |
| spathe | A large bract ensheathing an inflorescence. (09 Oct 1997) |
| spathed | <botany> Having a spathe or calyx like a sheath. Source: Websters Dictionary (01 Mar 1998) |
| spathella | A closed membranous sac which envelopes the immature flower in some members of the family Podostemaceae, rupturing irregularly as the pedicel elongates at anthesis. (09 Oct 1997) |
| spathic | Like spar; foliated or lamellar; spathose. <chemical> Spathic iron, siderite. See Siderite . Origin: Cf. F. Spathique, fr. F. & G. Spath spar. Source: Websters Dictionary (01 Mar 1998) |
| spathose | <chemical> See Spathic. <botany> Having a spathe; resembling a spathe; spatheceous; spathal. See: Spathe. Source: Websters Dictionary (01 Mar 1998) |
| spathous | <botany> Spathose. Source: Websters Dictionary (01 Mar 1998) |
| spathulate | Spoon-shaped, broad at the tip and narrowed towards the base. (09 Oct 1997) |
| spatia | Plural of spatium. Origin: L. (05 Mar 2000) |
| spatia anguli iridocornealis | Irregularly shaped endothelium-lined spaces within the trabecular reticulum, through which the aqueous filters to reach the sinus venosus sclerae. Synonym: spatia anguli iridocornealis, ciliary canals, Fontana's spaces. (05 Mar 2000) |