longitudinal

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lon·gi·tu·di·nal

(lon'ji-tū'di-năl), [TA]
1. Running lengthwise; in the direction of the long axis of the body or any of its parts. Synonym(s): longitudinalis [TA]
2. Studied over a period of time, diachronic; contrast with cross-sectional or synchronic, which give equivalent results only under certain strict conditions of stability and equilibrium. Such strict attention to these conditions is of the greatest importance in the study of survivorship either in demographics or in cell economy (for example, survival pattern of erythrocytes and platelets).
[L. longitudo, length]
Farlex Partner Medical Dictionary © Farlex 2012

lon·gi·tu·di·nal

(lon'ji-tū'di-năl) [TA]
1. Running lengthwise; in the direction of the long axis of the body or any of its parts.
2. Data studied over a period of time, diachronic; contrast with cross-sectional or synchronic, which give equivalent results only under certain strict conditions of stability and equilibrium.
[L. longitudo, length]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

longitudinal

(lŏn″jĭ-tood′ĭ-năl, ĭ-tū′) [L. longitudo, length]
1. Parallel to the long axis of the body or part.
2. Continuing or lasting for some time. A longitudinal study follows its subjects from month to month or year to year
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
In our study, the majority of patients with an opticospinal presentation had neuromyelitis optica with a longitudinally extensive cord lesion and were seropositive.
Adolescents are likely to choose friends with similar social and psychological characteristics, attitudes, and behavior preferences, and previous research has shown that exposure to these friends extends these similar attitudes and behaviors longitudinally.
This probably occurs because many researchers spontaneously report results of immediacy without examining their programs longitudinally. Forty-seven percent of the 84 programs reported degree requirements and 23 % reported both degree and mentoring requirements.
Unit comes with steel adapter plates that move longitudinally to speed alignment of the boot seal with the hopper slide gate and cut down on time-consuming railcar repositioning.
Apparatus for continuously processing wood product formed from random lengths of wood strips assembled in face-to-face relationship with heat curable adhesive applied to adjacent contacting faces of the strips includes a pair of opposed, parallel, linear arrays of electrically insulative blocks, the linear arrays of blocks having inner, confronting faces spaced apart transversely to define an elongated, longitudinally extending press zone into which the product is adapted to be fed.
The Piranha II Tungsten Grinder allows operators to properly grind tungsten longitudinally on high quality diamond wheels and improve most aspects of weld applications including are starting, are stability and electrode life.
Live ticks were cut longitudinally into halves, and half of each specimen was placed in lysis buffer from a QIAamp DNA Mini Kit (Qiagen Inc., Canada); DNA was extracted per manufacturer's instructions.
To control for depuration differences, milk samples could be collected longitudinally. Finally, to extract the maximum information from the data, sampling and testing methods would have to be in harmony across different studies.
The mixer consists of a rotating drum fitted with carefully designed scoops welded longitudinally to the inside of the drum and is specifically designed for the rapid mixing of dry, particulate solids.
Using these variables, forces acting longitudinally and transversely can be calculated and these can be used to give a meaningful picture of the extent to which the total tensile strength is being utilised.
Hemostats are used to clamp the palatopharyngeus muscle longitudinally on either side for hemostasis.
Drive will be rear wheel and the V8 will be mounted longitudinally rather than transversely.