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multicostate
multicostate adj. 
/ˌməlˌtaɪˈkɑˌsteɪt/, /ˌməltəˈkɑˌsteɪt/ Botany (of a leaf) having more than one rib.
Brit. /ˌmʌltɪˈkɒsteɪt/
, /ˌmʌltɪˈkɒsteɪt/U.S. /ˌməltiˈkɑˌsteɪt/
, /ˌməltiˈkɑˌsteɪt//ˌməlˌtaɪˈkɑˌsteɪt//ˌməltəˈkɑˌsteɪt/ΘΚΠ
the world > plants > part of plant > part defined by form or function > ridge channel > [adjective]
rivelledOE
wrinkled1563
channelled1597
ribbed1597
trisulcated1703
ribby1706
rugose1707
ruminate1800
ruminated1828
striolate?1841
multicostate1849
crested1856
fork-ribbed1858
tricostate1861
bicarinate1872
carinal1872
vallecular1875
carinate1876
bicarinated1880
trisulcate1891
1849 J. H. Balfour Man. Bot. §144 Reticulated Venation... I. Unicostate. A single rib or costa in the middle (midrib). II. Multicostate. More than one rib.
1881 Jrnl. Linn. Soc.: Bot. 18 271 Achenia multicostate.
1945 W. O. Howarth & L. G. G. Warne Lowson's Textbk. Bot. (ed. 9) vi. 129 In both types the venation may be unicostate or multicostate, according as there is one chief vein (forming the midrib) or a number of chief veins.
1992 M. Schaffer-Fehre tr. S. Schaal & W. Ziegler Messel iv. 34 In contrast to the multicostate leaves of monocotyledons..which show, at most, simple connections (commissures), the tertiary veins in the Araceae are reticulate.
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