pp1d01 intelligo, est NOT pp1d04 intelligere NOT pp1d03 esse, dari
 
Disambiguation This page treats intelligere and esse only where used in formal definitions. For the general uses of these verbs see pp1d04 intelligere, intellectus.html , and pp1d03 esse, dari.html
Forms Forms of intelligo: intelligam, dico, appello, voco
Forms of est: dicitur
Meaning  "Intelligo" and "est" are both used in formal definitions as separators between definiendum (the string to be defined ) and definiens (the defining string). Ethica's concept of definition radically differs from the modern geometric concept, which is introducing short strings to replace long strings merely in order to reduce text size and readability, and where a definiendum can be eliminated out whenever desired. But in Ethica, definitions are wordings of ideas, hence definitions in Ethica claim adequacy (adaequatio) and truth (veritas). (see quote of 1p08s2, below  ).
In addition, an est-definition also harbours the claim that the definition matches the common notion. E.g. the definition of amor has as its object the Latin dictionary meaning of amor, and is molded to be congruent to it.
An intelligo-definition may be entirely different from any common notion associated with the term defined, and is designed to be a philosophical innovation.
The 18 unused definitions in Ethica (see geometrical report) are all est-definitions. Their match to the common notion apparently is a sort of terminal conclusion, though never proven. But each has an "EXPLICATIO".
Mantras [what is] per   ...  .  intelligo
Occurrence [geomap] First occurrences: intelligo: {1d01}, est (dicitur) {1d02}, est-definitions are typically used when defining emotions. Intelligo- (total: 23) and est-definitions (total: 52) are separately listed in the geometrical report (click there "defined terms")
NOT linked: Among occurrences of est, the definition-sense is relatively rare. More frequently est occurs  in the meaning of existere: pp1d03 esse, dari (referring to the status of being, existing). But naturally, by far the most uses are simply as predicate connector (like in: "adaequata est") and NOT linked.
Among occurrences of intelligo, the definition-sense is relatively rare. Most occurrences are linked to pp1d04 intelligere, intellectus.
{1d06 deus}                                                                                         ...  .remarkably, the connector "intelligo" is used in the Deus-definition, which shows that this definition is designed to be philosophically innovative and does NOT harbour the claim to conform to the common notion  ... 
  ...  By God, I mean   ...  ..Per Deum intelligo  ...  .
1p08s2 modificationum non existentium                             ...  about definitions: a true definition of a thing expresses its nature  ... 
  ...  The true definition of a thing neither involves nor expresses anything beyond the nature of the thing defined  ...   No definition implies or expresses a certain number of individuals, inasmuch as it expresses nothing beyond the nature of the thing defined. For instance, the definition of a triangle expresses nothing beyond the actual nature of a triangle: it does not imply any fixed number of triangles  ...  .   ...   veram uniuscujusque rei definitionem nihil involvere neque exprimere praeter rei definitae naturam  ...  nempe nullam definitionem certum aliquem numerum individuorum involvere neque exprimere quandoquidem nihil aliud exprimit quam naturam rei definit. Exempli gratia definitio trianguli nihil aliud exprimit quam simplicem naturam trianguli; at non certum aliquem triangulorum numerum  ... 
{2d05 duratio}                                                                                     ...  the first of 52 est-definitions in Ethica. All emotion-definitions  (starting {3de01}) feature the est-connector,   ...  est-definitions harbour the claim to conform to the common notion (see above)  ...  
  ...  Duration is  ...    ...  Duratio est  ... 
{2d06 perfectio}                                                                               ...  an anomalous definition. There is no definiens/definiendum asymmetry, and neither terms are formally defined elsewhere in Ethica. The term occurring second in Ethica ("perfectio") is here taken to be defined by the first occurring ("realitas"). Redraft of the geomaps  with the inverse definition does not vitally alter the deductive structure.
  ...   Reality and perfection I use as synonymous terms.   ...  Per realitatem et perfectionem idem intelligo.
3de20e verborum significationem                                                 ...   the definitions of favor and indignatio are explained to be unusual in NOT explaining the common meaning of those terms but  "the nature of things"  ... 
Explanation-I am aware that these terms are employed in senses somewhat different from those usually assigned. But my purpose is to explain, not the meaning of words, but the nature of things. I therefore make use of such terms, as may convey my meaning without any violent departure from their ordinary signification. One statement of my method will suffice. As for the cause of the above-named emotions see III. xxvii. Coroll. i., and III. xxii. note. EXPLICATIO: Haec nomina ex communi usuae aliud significare scio. Sed meum institutum non est verborum significationem sed rerum naturam explicare easque iis vocabulis indicare quorum significatio quam ex u su habent, a significatione qua eadem usurpare volo, non omnino abhorret, quod semel monuisse sufficiat. Caeterum horum affectuum causam vide in corollario I propositionis 27 et scholio propositionis 22 hujus partis. 
 
{3p04 nisi a causa externa destrui}                                            ...  general property of definitions formulated for use in a proof  ... 
  ...   definition of anything affirms the essence of that thing, but does not negative it; in other words, it postulates the essence of the thing, but does not take it away  ...    ...  definitio enim cujuscunque rei ipsius rei essentiam affirmat sed non negat  sive [mng eqv] rei essentiam ponit sed non tollit  ...