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n. pl. ca·tal·y·ses (-sēz′)
The action of a catalyst, especially an increase in the rate of a chemical reaction.

[Greek katalusis, dissolution, from katalūein, to dissolve : kata-, intensive pref.; see cata- + lūein, to loosen; see leu- in Indo-European roots.]

cat′a·lyt′ic (kăt′l-ĭt′ĭk) adj.
cat′a·lyt′i·cal·ly adv.


(ˌkætəˈlɪtɪk) or


(Chemistry) of or relating to catalysis; involving a catalyst
ˌcataˈlytically adv


(ˌkæt lˈɪt ɪk)
pertaining to, involving, or acting as a catalyst.
[1835–40; < Greek katalutikós able to dissolve <katálȳsis dissolution; see catalysis]
cat`a•lyt′i•cal•ly, adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.catalytic - relating to or causing or involving catalysis; "catalytic reactions"
hvötunar-; örvandi, hvetjandi


A. ADJcatalítico
B. CPD catalytic converter N (Aut) → catalizador m


[ˌkætəˈlɪtɪk] adj
(CHEMISTRY) [property] → catalytique
(fig) a catalytic effect → un effet catalyseurcatalytic converter npot m catalytique


adj (lit, fig)katalytisch


(kӕtəlist) noun
1. a substance which causes or assists a chemical change in another substance without itself undergoing any permanent chemical change.
2. someone or something that helps bring about a change.
ˌcataˈlytic adjective
References in periodicals archive ?
Today, EIBs financing to PPCR, under the current challenging financial conditions, underlines EIBs catalytical role to boost investment in renewables.
Schiff base ligands readily coordinate with a range of metal ions yielding stable complexes which exhibit interesting physical, chemical, biological and catalytical properties [44].
2) Catalytical modification: this modification involves the impregnation of PAN precursors with certain chemicals which can catalyze the cyclized reaction and reduce the activation energy of PAN precursors, so it not only shortens the residence time of stabilization, but also improves the exothermic behavior of PAN precursors.
437 US 584, 198 USPQ 193 the claim was for the method of updating alarm limits which contain new mathematical formula in a Programme to do some catalytical chemical reaction.
According to these reports, we can assume that nanomaterials large surface area provides a better matrix for enzyme immobilization, improve the enzyme loading per nanoparticles mass unit and its catalytical properties.
4] as carbon precursor, whereas the MWCNTs were grown by catalytical chemical vapor deposition (CVD) using camphor (as carbon source) and the ferrocene (Fe-catalyst) in the ratio of 20: 1.
Moskaug, "Flavonoids increase the intracellular glutathione level by transactivation of the [gamma]-glutamylcysteine synthetase catalytical subunit promoter," Free Radical Biology and Medicine, vol.
Furthermore, a broad variety of effects have been demonstrated, such as anticorrosive, catalytical and storage of electricity, shielding against electromagnetic waves, storage of electricity in batteries or capacitors, or use as a catalyst.
For example, at elevate temperatures enzyme undergoes partial unfolding due to the destruction of non-covalent interactions, and drastic pH variations affects the state of ionization of catalytical aminoacids.
These complexes are expected to show catalytical activities like they can be used (1) for the copolymerization of cyclohexane and carbondioxide and (2) in the polymerization of lactides.
Upgrading shale oil heavy fractions with biomass via catalytical hydroprocessing.
The chemically catalysed transesterification of the bleached oil using basic, acidic and two step acid- base catalytical processes showed that acid catalysed process was better than base catalysed reaction.