1. N OUNS WITH L ATIN AND G REEK PLURALS

2. T HERE ARE SOME NOUNS IN E NGLISH OF L ATIN AND G REEN ORIGIN WHICH DO NOT FORM PLURAL BY ADDING AN – S. T HEY ARE VERY COMMON IN THE LANGUAGE OF SCIENCE. Nouns ending in –us with plurals ending in –i. SingularPlural NUCLEUS = jezgroNUCLEI RADIUS = poluprecnikRADII FUNGUS = gljivicaFUNGI FOCUS = ziza, sredistFOCI

3. Nouns ending in –is with plurals ending in –es. SingularPlural BASIS = osnovaBASES THESIS = tezaTHESES AXIS = osa, osovinaAXES INDEXINDICES

4. Nouns ending in –a with plurals ending in –ae. Nouns ending in –um with plurals ending in –a. SingularPlural ANTENNA = antenaANTENNAE FORMULA = formulaFORMULAE SingularPlural DATUM = podatakDATA MEDIUM = sredstvo, posrednik, medij MEDIA STRATUM = slojSTRATA

5. Nouns ending in –on with plurals ending in –a. SingularPlural PHENOMENON = fenomen, pojava PHENOMENA CRITERION = kriterijumCRITERIA

6. U SE THE CORRECT FORM OF THE NOUN IN BRACKETS. ___________ (nucleus) are located in the centre of the atoms. The __________ (radius) of electrons are extremely small. Orthorhombic system is characterized by three unequal _________ (axis). Lavoisier explained a number of chemical ________ (phenomenon). Geological _________ (stratum) are visible in some canyons. In order to become laws all _____________ (hypothesis) must be experimentally proved.

7. U SE THE CORRECT FORM OF THE NOUN IN BRACKETS. Nuclei are located in the centre of the atoms. The radii of electrons are extremely small. Orthorhombic system is characterized by three unequal axes. Lavoisier explained a number of chemical phenomena. Geological strata are visible in some canyons. In order to become laws all hypotheses must be experimentally proved.