Biology Dictionary: N
Search or browse the dictionary for the definition of biology terms starting with the letter “N”.
Dictionary > N
N
- N-acetylglucosamine
- Nacre
- NADH
- Naegleria fowleri
- Nail
- Nail bed
- Nail matrix
- Naked
- Naked virus
- Nanometer
- Nariokotome Boy
- Naris
- Nasal speculum
- Nasogastric aspiration
- Nasopharynx
- Nasses law
- Nastic movement
- Natal cleft
- Natality
- Native
- Native protein
- Natural
- Natural active immunity
- Natural classification
- Natural environment
- Natural history
- Natural immunity
- Natural mutation
- Natural passive immunity
- Natural reservoir
- Natural science
- Natural selection
- Naturally acquired active immunity
- Naturally acquired passive immunity
- Nature
- Navel
- Navicular fossa of urethra
- Navigation
- Nearctic realm
- Necator americanus
- Necatoriasis
- Neck
- Necrosis
- Nectar
- Nectophore
- Negative feedback
- Negri bodies
- Neisseria flavescens
- Neisseria mucosa
- Neisseria sicca
- Nekton
- Nematocyst
- Nematocyte
- Nematoda
- Nematode
- Nematology
- Neomorphic mutation
- Neonatal
- Neotropical realm
- Nephron
- Neriine
- Nerve
- Nerve conduction
- Nerve Fiber
- Nerve impulse
- Nervous colon syndrome
- Nervous dyspepsia
- Nervous system
- Nervous tissue
- Nest
- Net
- Net photosynthesis
- Net primary productivity
- Net-veined
- Neurilemma
- Neuroanatomist
- Neuroethology
- Neurogastronomy
- Neuroglia
- Neurohormone
- Neurology
- Neuromelanin
- Neuromuscular junction
- Neuron
- Neuronal sprouting
- Neurophysiology
- Neuropodia
- Neuropsychology
- Neurorrhaphy
- Neuroscience
- Neurotoxins
- Neutral
- Neutral dye
- Neutral mutation
- Neutral solution
- Neutral stimulus
- Neutral theory of molecular evolution
- Neutralization
- Neutralizing antibody
- Neutrons
- Neutropenia
- Neutrophil
- Neutrophile
- Nexin
- Nick
- Nicked circle
- Nicotinamide adenine dinucleotide
- Nicotinamide adenine dinucleotide phosphate
- Nictitating membrane
- Nidus
- Nif gene
- Nipple
- Nitabuchs membrane
- Nitratase
- Nitrate respiration
- Nitrates
- Nitrification
- Nitrifying bacterium
- Nitrites
- Nitrogen
- Nitrogen Cycle
- Nitrogen fixation
- Nitrosomonas
- Nm
- Noble element
- Nocturnality
- Nodal points
- Node
- Non Random Mating
- Non-living thing
- Non-Mendelian inheritance
- Non-seed plant
- Non-sister chromatid
- Non-sustainability
- Nonapeptide
- Noncellular
- Nondisjunction
- Nonessential nutrient
- Nonfenestrated forceps
- Nonose
- Nonpolar compound
- Nonsense
- Nonsense mutation
- Nonseptate mycelium
- Nonviable
- Norma lateralis
- Normal
- Normal range
- Norms
- Nose
- Notch
- Notochord
- Nourish
- Novel
- Nucellar embryony
- Nuchal region
- Nuclear body
- Nuclear division
- Nuclear envelope
- Nuclear lamina
- Nuclear matrix
- Nuclear membrane
- Nuclear pore
- Nuclear pore complex
- Nuclear-cytoplasmic ratio
- Nuclease
- Nuclease S1
- Nucleation
- Nucleic acid
- Nucleobase
- Nucleoid
- Nucleolar organizer region banding
- Nucleolus
- Nucleoplasm
- Nucleoporin
- Nucleoside
- Nucleosome
- Nucleotide
- Nucleotide deletion
- Nucleus
- Null cell
- Null cells
- Null hypothesis
- Nulliparity
- Nullisomy
- Numerical taxonomy
- Nursery
- Nurture
- Nut
- Nutlets
- Nutrient
- Nutrient artery
- Nutrient medium
- Nutriment
- Nutrition
- Nutritive value
- Nutshell
- Nyctinasty
- Nycturia