glossary
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inflorescence n. (inflorescence)
plant architecture grouping several flowers

insecticide n. (insecticide)
chemical used against insects

ion n. (ion)
electrically charged atom which has won (anion) or lost (cation) one or several electron(s)

ionosphere n. (ionosph√®re)
upper layer of the atmosphere (100 to 1,000 km) composed by ionized gas

isotope n. (isotope)
each of the elements of the same atomic number differing in their number of neutrons (i.e., by their mass)