heartletn.
/ˈhɑːtlᵻt/, U.S. /ˈhɑrtlət/ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > [noun] > parts of > embryo or radicle
embryon1640
germen1651
neb1658
radicle1671
embryo1682
embryo plant1692
plantula1698
plantleta1711
germ1721
niba1722
radicula1725
plantule1727
radicule1728
rostellum1760
radicale1763
rostel1783
heartlet1808
corcle1810
proembryo1849
tigelle1860
hypophysis1875
embryoid1963
1808 J. M. Good Anniv. Oration Med. Soc. London 4 (note) Perhaps heartlet would be a better term than corcle, as more agreeable to the genius of our own language.
1809 New Ann. Reg. 1808 Domest. Lit. 353/2 Every part of the plant is progressively produced from the corculum or heartlet of the seed.
1834 Genesee (Rochester, N.Y.) Farmer 8 Nov. 353/2 When the seed is placed in the ground, the cotyledons or lobes impart moisture and oxygen to the heartlet, which sends forth two radicles, the ascending and descending.
2. A small heart, a little heart (sometimes as a term of endearment; cf. heart n. 21). Also: any small heart-shaped object.
ΚΠ
1868 W. S. Gilbert Little Oliver in Fun 5 Dec. 132/2 Why, pretty page, art ever sighing? Is sorrow in thy heartlet lying?
1885 H. Adams Let. 19 Sept. in Lett. (1982) II. 626 Give our best love to Mrs Hay and the heartlets, and keep some.
1906 M. Maddocks Good Housek. Family Cook Bk. 244 Cheese Heartlets... Bake in small heart shaped tins, lined with puff paste.
1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) xiv. 481 A variety of hearts are found in invertebrates, and, in amphioxus, there is a whole series of paired ‘heartlets’ along the bases of the aortic arches.
This entry has been updated (OED Third Edition, June 2013; most recently modified version published online March 2022).
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n.1808