- fertilise
- fertilize
- fibre
- fenestrated
- fertilizer
- fiber
- fimbriate
- fission
- fissiparous
- flabellate
- flabelliform
- flagella
- flagellate
- flagelliform
- flagellum
- flavo-protein
- foramen
- foramina
- gamete
- functionary
- gemma
- gemmae
- gemmation
- gene
- genera
- geniculate
- geminate
- gemmate
- geniculated
- globulin
- genotype
- genus
- guttate
- habit
- hermaphrodite
- hermaphroditic
- hermaphroditical
- heterogenesis
- heterotrophic
- heterogamy
- hispid
- histogenetic
- histological
- histologist
- histolysis
- hoary
- histogenesis
- hispidity
- histiology
- histogeny
- histology
- hormonic
- homo
- homozygote
- hormone
- homogamy
- host
- hyperplasia
- hypertrophic
- hypertrophied
- id
- idioplasm
- hypertrophy
- imbalance
- imbricate
- immaculate
- inbreeding
- inclusion
- indeciduous
- individual
- incept
- indigene
- incrassate
- indeciduate
- indicator
- inhibit
- inhibition
- indifferent
- insectivorous
- intercellular
- intergrade
- intercross
- insectivore
- interoceptive
- interoceptor
- interosculate
- interosculation
- interspecific
- intussuscept
- intussusception
- invagination
- invertasre
- involuntary
- irritant
- irritating
- irritative
- irritativeness
- irritability
- irritable
- irritableness