an enzyme that catalyzes the hydrolysis of sucrose into glucose and fructose
sucrase
Noun
an enzyme that catalyzes the hydrolysis of sucrose into glucose and fructose
supermolecule
Noun
any very large complex molecule
stand oil
Noun
a thick oil comprised of linseed, tung, or soya oils which have been heated to over 300 C
slime
Noun
any thick, viscous matter
slime
Verb
cover or stain with slime
sapropel
Noun
sludge (rich in organic matter) that accumulates at the bottom of lakes or oceans
score paper
Noun
paper with lines appropriate for writing music
sulfur mustard
Noun
a toxic war gas with sulfide based compounds that raises blisters and attacks the eyes and lungs
splinters
Noun
wood in small pieces or splinters
synthetic fiber
Noun
fiber created from natural materials or by chemical processes
sarin
Noun
a highly toxic chemical nerve agent that inhibits the activity of cholinesterase
sweet-birch oil
Noun
a liquid ester with a strong odor of wintergreen
soft-cast steel
Noun
steel with less than 0.15% carbon
simple sugar
Noun
a sugar (like sucrose or fructose) that does not hydrolyse to give other sugars
silver chloride
Noun
a chloride used chiefly in the manufacture of photographic emulsions
stannic chloride
Noun
a colorless caustic liquid made by treating tin with chlorine
synthetic rubber
Noun
any of various synthetic elastic materials whose properties resemble natural rubber
stannous fluoride
Noun
a white powder that is used to fluoridate toothpaste
sandstone
Noun
a sedimentary rock consisting of sand consolidated with some cement (clay or quartz etc.)
silicone rubber
Noun
made from silicone elastomers
staple fiber
Noun
a natural fiber (raw cotton, wool, hemp, flax) that can be twisted to form yarn
staple fibre
Noun
a natural fiber (raw cotton, wool, hemp, flax) that can be twisted to form yarn
starch
Noun
a commercial preparation of starch that is used to stiffen textile fabrics in laundering
starch
Noun
a complex carbohydrate found chiefly in seeds, fruits, tubers, roots and stem pith of plants, notably in corn, potatoes, wheat, and rice
starch
Verb
stiffen with starch
sangapenum
Noun
a variety of gum
sarcosine
Noun
a sweetish crystalline amino acid
sard
Noun
a deep orange-red variety of chalcedony
sardius
Noun
a deep orange-red variety of chalcedony
sardine oil
Noun
oil obtained from sardines and used chiefly as a lubricant and in soap
sardonyx
Noun
an onyx characterized by parallel layers of sard and a different colored mineral
sawdust
Noun
fine particles of wood made by sawing wood
saw log
Noun
log large enough to be sawed into boards
saxitoxin
Noun
a powerful neurotoxin produced by certain dinoflagellates found in red tides
scale wax
Noun
partly refined paraffin wax
scheelite
Noun
a mineral used as an ore of tungsten
seawater
Noun
water containing salts
schorl
Noun
black tourmaline
saltwater
Noun
water containing salts
scrap iron
Noun
iron to be melted again and reworked
scratch pad
Noun
pad for preliminary or hasty writing or notes or sketches etc
scratch paper
Noun
pad for preliminary or hasty writing or notes or sketches etc
scribbling block
Noun
pad for preliminary or hasty writing or notes or sketches etc
seal oil
Noun
a pale yellow to red-brown fatty oil obtained from seal blubber
secretase
Noun
a set of enzymes believed to snip pieces off a longer protein producing fragments of amyloid protein that bunch up and create amyloid protein plaques in brain tissue (the pathological hallmark of Alzheimer's)
sedimentary clay
Noun
clay soil formed by sedimentary deposits
serine
Noun
a sweetish crystalline amino acid involved in the synthesis by the body of cysteine
salicylate
Noun
a salt of salicylic acid (included in several commonly used drugs)