英文英文字典
英文英文字典
古腾堡计划中的在线英语-英语词典
字典
Umbelliferone
(n.)
A tasteless white crystalline substance, C9H6O3,
found in the bark of a certain plant (Daphne Mezereum), and also
obtained by the distillation of certain gums from the Umbelliferae, as
galbanum, asafetida, etc. It is analogous to coumarin. Called also
hydroxy-coumarin.
Umbelliferous
(a.)
Producing umbels.
Umbelliferous
(a.)
Of or pertaining to a natural order (Umbelliferae)
of plants, of which the parsley, carrot, parsnip, and fennel are
well-known examples.
Umbellularia
(n.)
A genus of deep-sea alcyonaria consisting of a
cluster of large flowerlike polyps situated at the summit of a long,
slender stem which stands upright in the mud, supported by a bulbous
base.
Umbellule
(n.)
An umbellet.
Umber
(n.)
A brown or reddish pigment used in both oil and water
colors, obtained from certain natural clays variously colored by the
oxides of iron and manganese. It is commonly heated or burned before
being used, and is then called burnt umber; when not heated, it is
called raw umber. See Burnt umber, below.
Umber
(n.)
An umbrere.
Umber
(n.)
See Grayling, 1.
Umber
(n.)
An African wading bird (Scopus umbretta) allied to the
storks and herons. It is dull dusky brown, and has a large occipital
crest. Called also umbrette, umbre, and umber bird.
Umber
(a.)
Of or pertaining to umber; resembling umber; olive-brown;
dark brown; dark; dusky.
Umber
(v. t.)
To color with umber; to shade or darken; as, to umber
over one's face.
Umbery
(a.)
Of or pertaining to umber; like umber; as, umbery gold.
Umbilic
(n.)
The navel; the center.
Umbilic
(n.)
An umbilicus. See Umbilicus, 5 (b).
Umbilic
(a.)
See Umbilical, 1.
Umbilical
(n.)
Of or pertaining to an umbilicus, or umbilical cord;
umbilic.
Umbilical
(n.)
Pertaining to the center; central.
Umbilicate
(a.)
Alt. of Umbilicated
Umbilicated
(a.)
Depressed in the middle, like a navel, as a flower,
fruit, or leaf; navel-shaped; having an umbilicus; as, an umbilicated
smallpox vesicle.
Umbilicated
(a.)
Supported by a stalk at the central point.