|
opposite 1 |
|
arrangement |
|
Disposed in pairs along the axis, the members of each pair inserted at the same level across from one another. |
|
operculum pl. opercula |
= lid |
STRUCTURE |
|
A distal, cover-like portion of a structure whose main body is otherwise closed, transversely discontinuous with the main body around most of the circumference, or becoming partially or wholly separate by transverse dehiscence; as of an ascidium (pitcher), pollen grain, pyxis, or sporangium (spore case). |
|
operculate |
= lidded |
architecture |
|
Having an operculum (lid). |
|
opaque |
|
coloration |
|
Not transmitting light. |
|
ontogeny |
= development |
CHARACTER |
|
Mode or pattern of growth and differentiation. |
|
one-… |
= mono…, single-…, uni… |
prefix |
|
Indicating presence of or constitution by one entity of the type denoted by the term's stem; as in one-carpelled, one-loculed, one-seeded. See also entries for particular terms beginning with this prefix whose meanings, at least in some applications, are more specific than usually indicated by such combination. |
|
one-veined |
= hyphodromous, single-veined |
venation |
|
Having one median, primary vein and no other venation externally evident. |
|
one-sided 3 |
= unilateral |
insertion |
|
Upon or arising from one side only of the bearing structure. |
|
one-sided 3 |
= unilateral |
position |
|
Upon or arising from one side only of the bearing structure. |
|
one-sided 2 |
= unilateral |
orientation |
|
Disposed or directed toward one side only. |
|
one-sided 1 |
= unilateral |
architecture |
|
Having only one side, as compared with presumably equivalent, bilaterally symmetric structures. |
|
one-lipped |
= unilabiate; < labiate, lipped |
architecture |
perianth, calyx, corolla |
Strongly zygomorphic with connate and/or coherent members some or all of whose distal portions form one lip-like structure. |
|
one-leafleted |
= single-leafleted, unifoliolate |
architecture |
foliaceous structure |
Structurally compound but with only one leaflet, whose nature (as a leaflet, not a leaf) is revealed by an evident articulation with the petiole, this condition presumably derived by evolutionary reduction from a multifoliolate precursor. |
|
oligo… |
= few-… |
prefix |
|
Indicating presence of or constitution by a relatively small number of entities of the type denoted by the term's stem; as in oligandrous, oligocellular, oligofloral, oligospermous. See also multi… (many-…, pluri…, poly…). |
|
oleaginous 2 |
= greasy, oily, unctuous |
texture |
|
Liquid or deformably solid, cohesive, and slippery to the touch. |
|
oleaginous 1 |
= greasy, oily, unctuous |
coating |
|
Of a grease- or oil-like film. |
|
oily 2 |
= greasy, oleaginous, unctuous |
texture |
|
Liquid or deformably solid, cohesive, and slippery to the touch. |
|
oily 1 |
= greasy, oleaginous, unctuous |
coating |
|
Of a grease- or oil-like film. |
|
oil-secreting |
|
exudation |
|
Producing and exuding an oily substance, often aromatic; when oil-secreting glands are indicated in the nominative, often they are called simply oil glands. |
|
odorless |
|
odor |
|
Lacking a distinct odor. |
|
odor |
|
CHARACTER |
|
Olfactory stimulation. |
|
odd-pinnate |
= imparipinnate |
architecture |
foliaceous structure |
Compound with each order pinnate and comprising an uneven number of members, one of them terminal. |
|
octa… |
= eight-… |
prefix |
|
Indicating presence of or constitution by eight entities of the type denoted by the term's stem; as in octandrous, octocarpellate, octolocular. |
|
ocrea pl. ocreae var. ochrea |
|
STRUCTURE |
|
A tubular sheath that encircles a stem at a node, subtending a petiole; thought to have arisen evolutionarily by lateral fusion of two stipules; in Polygonaceae. |
|
ochrea |
|
STRUCTURE |
|
See ocrea. |
