SINGULAR
PLURAL
addendum
addenda
Bacterium
bacteria
corrigendum
corrigenda
Erratum
errata
Ovum
Ova
Stratum
strata
Agenda
Agenda
Data
data
Aquarium
Aquaria, aquariums
Curriculum
Curricula, curriculums
Forum
Fora, forums
Medium
Media, mediums
Memorandum
Memoranda, memorandums
Stadium
Stadia, stadiums
Symposium
Symposia, symposiums
Ultimatum
Ultimata, ultimatums
Analysis
analyses
Basis
bases
thesis
theses
Crisis
crises
Diagnosis
diagnoses
Hypothesis
hypotheses
oasis
oases
synopsis
synopses
ellipis
ellipses
alumnus
alumni
bacillus
bacilli
locus
loci
Stimulus
stimuli
genus
genera
Cactus
Cacti / cactuses
focus
foci
fungus
Fungi/ funguses
nucleus
Nuclei / nucleuses
radius
Radii / radiuses
stylus
Styli / styluses
syllabus
Syllabi/ syllabuses
Terminus
Termini / terminuses
Genius
Geniuses
Criterion
Criteria
Phenomenon
phenomena
antena
Antenae, antenas
formula
Formulae, formulas
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