perisperm

(redirected from perisperms)
Also found in: Thesaurus, Medical, Encyclopedia.

per·i·sperm

 (pĕr′ĭ-spûrm′)
n. Botany
A layer of nutritive tissue in the seed of certain flowering plants that is derived from the nucellus and surrounds the embryo.

perisperm

(ˈpɛrɪˌspɜːm)
n
(Botany) the nutritive tissue surrounding the embryo in certain seeds, and developing from the nucellus of the ovule
ˌperiˈspermal, ˌperiˈspermic adj
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.perisperm - the nutritive tissue outside the sac containing the embryo in some seeds
plant tissue - the tissue of a plant
Mentioned in ?
References in classic literature ?
She was entreated to give them as much of her time as possible, invited for every day and all day long, or rather claimed as part of the family; and, in return, she naturally fell into all her wonted ways of attention and assistance, and on Charles's leaving them together, was listening to Mrs Musgrove's history of Louisa, and to Henrietta's of herself, giving opinions on business, and recommendations to shops; with intervals of every help which Mary required, from altering her ribbon to settling her accounts; from finding her keys, and assorting her trinkets, to trying to convince her that she was not ill-used by anybody; which Mary, well amused as she generally was, in her station at a window overlooking the entrance to the Pump Room, could not but have her moments of imagining.
Examples include the pluralised nouns FORESHORES, HANDSTANDS, HARUMSCARUMS, HELTERSKELTERS, HOTSPOTS, NICKSTICKS, PERISPERMS, POOPERSCOOPERS, POROSPORES (st), POTSHOTS, RICKSTICKS, TYLOSTYLES, and the verb OVERHOVERS.
8 10 12 1vc OUTSHUTS OUERTHUERT ACALYCAL 2vc SENESYNE NIGHINNGHI (stream in Guinea) TEKALITSKALI (stream in Georgia) 3vc ARISARDS NOOGANONGA (pool in Australia) TEESTERS 4vc INGOINGS PERISPERMS SHOESHOP (w2) DERIDERS 5vc MUCKAMUCKS TETEATETES 6vc THREEOTHREES QUADRATOQUADRATS satisfies a 16-letter 8vc pattern
However, it is not homologous with the perisperms of other monocotyledons (or dicotyledons such as some Piperales and Nymphaeales: Dahlgren & Clifford, 1982), which are not derived from the nucellar epidermis.