1
                    
        a
    
          
                                          
              
          
                                                      : conforming to a type, standard, or regular pattern : characterized by that which is considered usual, typical, or routine                                      
              
                             
normal working hours
                                       under normal circumstances
                                       It was just a normal, average day.
                                       He had a normal childhood.
                                       Their reaction to the news was normal and expected.
                                       The noise made it impossible to carry on a normal conversation.
                                       Challenges are a normal part of life; remind yourself of that—and keep going.—
Gabrielle Gayagoy
                         
                
                    
        b
    
          
                                          
              
          
                                                      : according with, constituting, or not deviating from a norm, rule, procedure, or principle                                      
              
                             
The normal spelling rule is "i before e, except after c."
                                       They filed the paperwork in the normal way.
                                       The plane was able to make a normal approach and landing.
                                       … is your home office either your principal place of work or a place where you meet with customers or clients in the normal course of business?—
Rosalind Resnick and Susie Archer
                         
                
                    2
                    
                                          
              
          
                                                      : occurring naturally                                      
              
                             
normal immunity
                                       Cornell researchers showed that monarch butterflies that fed on leaves dusted with pollen from this [genetically] modified corn grew less and had higher mortality than larvae that fed on leaves dusted with normal pollen.—
Russell Schoch
                         
                
                    3
                    
        a
    
          
                                          
              
          
                                                      : approximating the statistical average or norm                                      
              
                             
The west coast had normal rainfall for the season.
                                       normal scores for the tenth grade algebra exam
                                       a country's normal death rate
                                       Their insulin and blood sugar levels are within normal range.—
Moises Velasquez-Manoff
                         
                
                    
        b
    
          
                                          
              
          
                                                      : generally free from physical or mental impairment or dysfunction : exhibiting or marked by healthy or sound functioning                                      
              
                             
normal reflexes
                                       Fifteen normal subjects and 40 asthmatics of variable severity were studied.—
J. Bousquet et al.
                                       However, my experience is that there are many, many normal people with no psychiatric illness who have music playing in their head almost all the time or all the time.—
Keith W. Roach
                         
                
                    
        c
    
          
                                          
              
          
                                                      : not exhibiting defect or irregularity                                      
              
                             
normal and malignant cells
                                       a normal heart
                         
                
                    
        d
    
          
                                          
              
          
                                                      : within a range considered safe, healthy, or optimal                                      
              
                             
normal blood pressure
                                       normal lab tests
                         
                
                    4
                    
        a
    
          
                                of a solution 
                                  
              
          
                                                      : having a concentration of one gram equivalent of solute per liter                                      
                
                    
        c
    
          
                                          
              
          
                                                      : not associated                                      
              
                             
normal molecules
                         
                
                    
        d
    
          
                                          
              
          
                                                      : having a straight-chain structure                                      
              
                             
normal butyl alcohol
                         
                
                    5
                    
                                          
              
          
                                                      : perpendicular                                      
                
                                
            especially                
          
                                                      : perpendicular to a tangent (see tangent entry 1 sense 3) at a point of tangency                                      
            
            6
                    
                                of a subgroup 
                                  
              
          
                                                      : having the property that every coset produced by operating on the left by a given element is equal to the coset produced by operating on the right by the same element                                      
                
                    
7
                    
                                          
              
          
                                                      : relating to, involving, or being a normal curve or normal distribution                                      
              
                             
normal approximation to the binomial distribution
                         
                
                    8
                    
                                of a matrix 
                                  
              
          
                                                      : having the property of commutativity under multiplication by the transpose of the matrix (see matrix sense 5a) each of whose elements is a conjugate (see conjugate entry 1 sense 2b) complex number with respect to the corresponding element of the given matrix                                      
                
                    
1
                    
                                          
              
          
                                                      : a form or state regarded as the norm : standard                                      
                
                    
2
                    
                                          
              
          
                                                      : one that is normal                                      
                
                    
3
                    
        a
    
          
                                          
              
          
                                                      : a normal line                                      
                
                    
        b
    
          
                                          
              
          
                                                      : the portion of a normal line to a plane curve between the curve and the x-axis                                      
                
                    
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  Merriam-Webster unabridged




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